diff --git a/include/api.php b/include/api.php
index a5088756ae..819d2c75a0 100644
--- a/include/api.php
+++ b/include/api.php
@@ -2078,7 +2078,7 @@ function api_statuses_mentions($type)
 	$start = ($page - 1) * $count;
 
 	$condition = ["`uid` = ? AND `verb` = ? AND `item`.`id` > ? AND `author-id` != ?
-		AND `item`.`parent` IN (SELECT `iid` FROM `thread` WHERE `uid` = ? AND `mention` AND NOT `ignored`)",
+		AND `item`.`parent` IN (SELECT `iid` FROM `thread` WHERE `thread`.`uid` = ? AND `thread`.`mention` AND NOT `thread`.`ignored`)",
 		api_user(), ACTIVITY_POST, $since_id, $user_info['pid'], api_user()];
 
 	if ($max_id > 0) {
diff --git a/include/conversation.php b/include/conversation.php
index 08220d4bb2..1112447d50 100644
--- a/include/conversation.php
+++ b/include/conversation.php
@@ -562,15 +562,8 @@ function conversation(App $a, $items, $mode, $update, $preview = false, $order =
 					continue;
 				}
 
-				if ($item['network'] == NETWORK_FEED) {
-					$item['author-avatar'] = $item['contact-avatar'];
-					$item['author-name'] = $item['contact-name'];
-					$item['owner-avatar'] = $item['contact-avatar'];
-					$item['owner-name'] = $item['contact-name'];
-				}
-
-				$profile_name = (strlen($item['author-name']) ? $item['author-name'] : $item['name']);
-				if ($item['author-link'] && !$item['author-name']) {
+				$profile_name = $item['author-name'];
+				if (!empty($item['author-link']) && empty($item['author-name'])) {
 					$profile_name = $item['author-link'];
 				}
 
diff --git a/mod/acl.php b/mod/acl.php
index ede6940329..c16b3bab6e 100644
--- a/mod/acl.php
+++ b/mod/acl.php
@@ -260,7 +260,7 @@ function acl_content(App $a)
 		$params = ['order' => ['author-name' => true]];
 		$authors = Item::selectForUser(local_user(), ['author-link'], $condition, $params);
 		$item_authors = [];
-		while ($author = dba::fetch($authors)) {
+		while ($author = Item::fetch($authors)) {
 			$item_authors[$author['author-link']] = $author['author-link'];
 		}
 		dba::close($authors);
diff --git a/mod/display.php b/mod/display.php
index 6a07fa1762..919b12fbc3 100644
--- a/mod/display.php
+++ b/mod/display.php
@@ -347,7 +347,7 @@ function display_content(App $a, $update = false, $update_uid = 0)
 		Item::update(['unseen' => false], $condition);
 	}
 
-	$items = conv_sort(dba::inArray($items_obj), "`commented`");
+	$items = conv_sort(Item::inArray($items_obj), "`commented`");
 
 	if (!$update) {
 		$o .= "<script> var netargs = '?f=&item_id=" . $item_id . "'; </script>";
diff --git a/mod/network.php b/mod/network.php
index 61d957e1ad..61e4e779ed 100644
--- a/mod/network.php
+++ b/mod/network.php
@@ -456,7 +456,7 @@ function networkFlatView(App $a, $update = 0)
 
 	$params = ['order' => ['id' => true], 'limit' => [$a->pager['start'], $a->pager['itemspage']]];
 	$result = Item::selectForUser(local_user(), [], $condition, $params);
-	$items = dba::inArray($result);
+	$items = Item::inArray($result);
 
 	$condition = ['unseen' => true, 'uid' => local_user()];
 	networkSetSeen($condition);
diff --git a/mod/notes.php b/mod/notes.php
index 69b544472f..99114add8c 100644
--- a/mod/notes.php
+++ b/mod/notes.php
@@ -73,7 +73,7 @@ function notes_content(App $a, $update = false)
 	if (DBM::is_result($r)) {
 		$parents_arr = [];
 
-		while ($rr = dba::fetch($r)) {
+		while ($rr = Item::fetch($r)) {
 			$parents_arr[] = $rr['item_id'];
 		}
 		dba::close($r);
@@ -81,7 +81,7 @@ function notes_content(App $a, $update = false)
 		$condition = ['uid' => local_user(), 'parent' => $parents_arr];
 		$result = Item::selectForUser(local_user(), [], $condition);
 		if (DBM::is_result($result)) {
-			$items = conv_sort(dba::inArray($result), 'commented');
+			$items = conv_sort(Item::inArray($result), 'commented');
 			$o .= conversation($a, $items, 'notes', $update);
 		}
 	}
diff --git a/mod/ping.php b/mod/ping.php
index 06d83a1d9a..8028d69ed2 100644
--- a/mod/ping.php
+++ b/mod/ping.php
@@ -135,7 +135,7 @@ function ping_init(App $a)
 		$items = Item::selectForUser(local_user(), $fields, $condition, $params);
 
 		if (DBM::is_result($items)) {
-			$items_unseen = dba::inArray($items);
+			$items_unseen = Item::inArray($items);
 			$arr = ['items' => $items_unseen];
 			Addon::callHooks('network_ping', $arr);
 
diff --git a/mod/profile.php b/mod/profile.php
index 49d6fe261d..a6075b01cf 100644
--- a/mod/profile.php
+++ b/mod/profile.php
@@ -339,7 +339,7 @@ function profile_content(App $a, $update = 0)
 
 		$condition = ['uid' => $a->profile['profile_uid'], 'parent' => $parents_arr];
 		$result = Item::selectForUser($a->profile['profile_uid'], [], $condition);
-		$items = conv_sort(dba::inArray($result), 'created');
+		$items = conv_sort(Item::inArray($result), 'created');
 	} else {
 		$items = [];
 	}
diff --git a/mod/search.php b/mod/search.php
index d64ce7d0e1..974680d2a0 100644
--- a/mod/search.php
+++ b/mod/search.php
@@ -214,7 +214,7 @@ function search_content(App $a) {
 		if (!empty($itemids)) {
 			$params = ['order' => ['id' => true]];
 			$items = Item::selectForUser(local_user(), [], ['id' => $itemids], $params);
-			$r = dba::inArray($items);
+			$r = Item::inArray($items);
 		} else {
 			$r = [];
 		}
@@ -227,7 +227,7 @@ function search_content(App $a) {
 		$params = ['order' => ['id' => true],
 			'limit' => [$a->pager['start'], $a->pager['itemspage']]];
 		$items = Item::selectForUser(local_user(), [], $condition, $params);
-		$r = dba::inArray($items);
+		$r = Item::inArray($items);
 	}
 
 	if (!DBM::is_result($r)) {
diff --git a/mod/starred.php b/mod/starred.php
index 78ba4ce61e..443308c277 100644
--- a/mod/starred.php
+++ b/mod/starred.php
@@ -21,7 +21,7 @@ function starred_init(App $a) {
 		killme();
 	}
 
-	$item = Item::selectForUser(local_user(), ['starred'], ['uid' => local_user(), 'id' => $message_id]);
+	$item = Item::selectFirstForUser(local_user(), ['starred'], ['uid' => local_user(), 'id' => $message_id]);
 	if (!DBM::is_result($item)) {
 		killme();
 	}
diff --git a/src/Core/NotificationsManager.php b/src/Core/NotificationsManager.php
index 8020a281b0..507d4db131 100644
--- a/src/Core/NotificationsManager.php
+++ b/src/Core/NotificationsManager.php
@@ -410,7 +410,7 @@ class NotificationsManager extends BaseObject
 		$items = Item::selectForUser(local_user(), $fields, $condition, $params);
 
 		if (DBM::is_result($items)) {
-			$notifs = $this->formatNotifs(dba::inArray($items), $ident);
+			$notifs = $this->formatNotifs(Item::inArray($items), $ident);
 		}
 
 		$arr = [
@@ -495,7 +495,7 @@ class NotificationsManager extends BaseObject
 		$items = Item::selectForUser(local_user(), $fields, $condition, $params);
 
 		if (DBM::is_result($items)) {
-			$notifs = $this->formatNotifs(dba::inArray($items), $ident);
+			$notifs = $this->formatNotifs(Item::inArray($items), $ident);
 		}
 
 		$arr = [
@@ -535,7 +535,7 @@ class NotificationsManager extends BaseObject
 		$items = Item::selectForUser(local_user(), $fields, $condition, $params);
 
 		if (DBM::is_result($items)) {
-			$notifs = $this->formatNotifs(dba::inArray($items), $ident);
+			$notifs = $this->formatNotifs(Item::inArray($items), $ident);
 		}
 
 		$arr = [
diff --git a/src/Model/Contact.php b/src/Model/Contact.php
index 6a24b7da9f..973e5b5a21 100644
--- a/src/Model/Contact.php
+++ b/src/Model/Contact.php
@@ -1070,7 +1070,7 @@ class Contact extends BaseObject
 			'limit' => [$a->pager['start'], $a->pager['itemspage']]];
 		$r = Item::selectForUser(local_user(), [], $condition, $params);
 
-		$items = dba::inArray($r);
+		$items = Item::inArray($r);
 
 		$o = conversation($a, $items, 'contact-posts', false);
 
diff --git a/src/Model/Item.php b/src/Model/Item.php
index d4c5e81704..d6bfef39fb 100644
--- a/src/Model/Item.php
+++ b/src/Model/Item.php
@@ -34,15 +34,15 @@ require_once 'include/text.php';
 class Item extends BaseObject
 {
 	// Field list that is used to display the items
-	const DISPLAY_FIELDLIST = ['uid', 'id', 'parent', 'uri', 'thr-parent', 'parent-uri', 'guid',
+	const DISPLAY_FIELDLIST = ['uid', 'id', 'parent', 'uri', 'thr-parent', 'parent-uri', 'guid', 'network',
 			'commented', 'created', 'edited', 'received', 'verb', 'object-type', 'postopts', 'plink',
 			'wall', 'private', 'starred', 'origin', 'title', 'body', 'file', 'attach',
 			'content-warning', 'location', 'coord', 'app', 'rendered-hash', 'rendered-html', 'object',
 			'allow_cid', 'allow_gid', 'deny_cid', 'deny_gid', 'item_id',
-			'author-id', 'author-link', 'author-name', 'author-avatar', 'author-network',
+			'author-id', 'author-link', 'author-name', 'author-avatar',
 			'owner-id', 'owner-link', 'owner-name', 'owner-avatar',
 			'contact-id', 'contact-link', 'contact-name', 'contact-avatar',
-			'network', 'url', 'name', 'writable', 'self', 'cid', 'alias',
+			'writable', 'self', 'cid', 'alias',
 			'event-id', 'event-created', 'event-edited', 'event-start', 'event-finish',
 			'event-summary', 'event-desc', 'event-location', 'event-type',
 			'event-nofinish', 'event-adjust', 'event-ignore', 'event-id'];
@@ -66,6 +66,33 @@ class Item extends BaseObject
 	{
 		$row = dba::fetch($stmt);
 
+		// We prefer the data from the user's contact over the public one
+		if (!empty($row['author-link']) && !empty($row['contact-link']) &&
+			($row['author-link'] == $row['contact-link'])) {
+			if (isset($row['author-avatar']) && !empty($row['contact-avatar'])) {
+				$row['author-avatar'] = $row['contact-avatar'];
+			}
+			if (isset($row['author-name']) && !empty($row['contact-name'])) {
+				$row['author-name'] = $row['contact-name'];
+			}
+		}
+
+		if (!empty($row['owner-link']) && !empty($row['contact-link']) &&
+			($row['owner-link'] == $row['contact-link'])) {
+			if (isset($row['owner-avatar']) && !empty($row['contact-avatar'])) {
+				$row['owner-avatar'] = $row['contact-avatar'];
+			}
+			if (isset($row['owner-name']) && !empty($row['contact-name'])) {
+				$row['owner-name'] = $row['contact-name'];
+			}
+		}
+
+		// We can always comment on posts from these networks
+		if (isset($row['writable']) && !empty($row['network']) &&
+			in_array($row['network'], [NETWORK_DFRN, NETWORK_DIASPORA, NETWORK_OSTATUS])) {
+			$row['writable'] = true;
+		}
+
 		return $row;
 	}
 
@@ -334,14 +361,14 @@ class Item extends BaseObject
 			'id' => 'item_id', 'network'];
 
 		$fields['author'] = ['url' => 'author-link', 'name' => 'author-name',
-			'thumb' => 'author-avatar', 'nick' => 'author-nick', 'network' => 'author-network'];
+			'thumb' => 'author-avatar', 'nick' => 'author-nick'];
 
 		$fields['owner'] = ['url' => 'owner-link', 'name' => 'owner-name',
-			'thumb' => 'owner-avatar', 'nick' => 'owner-nick', 'network' => 'owner-network'];
+			'thumb' => 'owner-avatar', 'nick' => 'owner-nick'];
 
 		$fields['contact'] = ['url' => 'contact-link', 'name' => 'contact-name', 'thumb' => 'contact-avatar',
-			'url', 'name', 'writable', 'self', 'id' => 'cid', 'alias', 'uid' => 'contact-uid',
-			'photo', 'name-date', 'uri-date', 'avatar-date', 'thumb', 'dfrn-id', 'network' => 'contact-network'];
+			'writable', 'self', 'id' => 'cid', 'alias', 'uid' => 'contact-uid',
+			'photo', 'name-date', 'uri-date', 'avatar-date', 'thumb', 'dfrn-id'];
 
 		$fields['parent-item'] = ['guid' => 'parent-guid', 'network' => 'parent-network'];
 
@@ -1126,8 +1153,9 @@ class Item extends BaseObject
 				$user = dba::selectFirst('user', ['nickname'], ['uid' => $item['uid']]);
 				if (DBM::is_result($user)) {
 					$self = normalise_link(System::baseUrl() . '/profile/' . $user['nickname']);
-					logger("'myself' is ".$self." for parent ".$parent_id." checking against ".$item['author-link']." and ".$item['owner-link'], LOGGER_DEBUG);
-					if ((normalise_link($item['author-link']) == $self) || (normalise_link($item['owner-link']) == $self)) {
+					$self_id = Contact::getIdForURL($self, 0, true);
+					logger("'myself' is ".$self_id." for parent ".$parent_id." checking against ".$item['author-id']." and ".$item['owner-id'], LOGGER_DEBUG);
+					if (($item['author-id'] == $self_id) || ($item['owner-id'] == $self_id)) {
 						dba::update('thread', ['mention' => true], ['iid' => $parent_id]);
 						logger("tagged thread ".$parent_id." as mention for user ".$self, LOGGER_DEBUG);
 					}
diff --git a/src/Object/Post.php b/src/Object/Post.php
index bceee38444..594b18af88 100644
--- a/src/Object/Post.php
+++ b/src/Object/Post.php
@@ -198,16 +198,8 @@ class Post extends BaseObject
 
 		$filer = (($conv->getProfileOwner() == local_user() && ($item['uid'] != 0)) ? L10n::t("save to folder") : false);
 
-		if ($item['network'] == NETWORK_FEED) {
-			$item['author-avatar'] = $item['contact-avatar'];
-			$item['author-name'] = $item['contact-name'];
-			$item['owner-avatar'] = $item['contact-avatar'];
-			$item['owner-name'] = $item['contact-name'];
-		}
-
-		$diff_author = !link_compare($item['url'], $item['author-link']);
-		$profile_name = htmlentities(((strlen($item['author-name'])) && $diff_author) ? $item['author-name'] : $item['name']);
-		if ($item['author-link'] && (!$item['author-name'])) {
+		$profile_name = htmlentities($item['author-name']);
+		if (!empty($item['author-link']) && empty($item['author-name'])) {
 			$profile_name = $item['author-link'];
 		}