Generally, you could attach every kind of file to a post.
This is possible by using the "paper-clip"-symbol in the editor.
These files will be linked to your post and can be downloaded by your contacts.
But it's not possible to get a preview for these ones.
Because of this, this upload method is recommended for office or zipped files.
If you want share content from Dropbox, Owncloud or any other [filehoster](http://en.wikipedia.org/wiki/Comparison_of_file_hosting_services), use the "link"-button (chain-symbol).
1. Add the video or audio link of a hoster (Youtube, Vimeo, Soundcloud and everyone else with oembed/opengraph-support). Videos will be shown with a preview image you can click on to start it. SoundCloud directly inserts a player to your post.
A plugin called "blockem" can be installed to collapse/hide all posts from a particular person in your stream if you desire complete blocking of an individual, including his/her conversations with your other friends.
Then Friendica issues requests to all your contacts to remove you.
This will also remove you from the global directory.
Doing this requires your account and profile still to be "partially" available for up to 24 hours in order to establish contact with all your friends.
We can block it in several ways so that it appears empty and all profile information erased, but will then wait for 24 hours (or after all of your contacts have been notified) before we can physically remove it.
1. Posts would have to be copied to all sites on the network that are "listening" to that hashtag. This would increase the storage demands to the detriment of small sites. It would make the use of shared hosting practically impossible.
3. It creates a natural bias towards large sites which hold more tagged content - if your network uses tagging instead of other conversation federation mechanisms such as groups/forums.
Instead, we offer other mechanisms for wide-area conversations while retaining a 'level playing ground' for both large and small sites, such as forums and community pages and shared tags.
Friendica is using a [Twitter/StatusNet compatible API](help/api), which means you can use any Twitter/StatusNet/GNU Social client for your plattform as long as you can change the API path in its settings.
Depending on the features of the client you might encounter some glitches in usability, like being limited in the length of your postings to 140 characters and having no access to the [permission settings](help/Groups-and-Privacy).
If you have problems with your Friendica page, you can ask the community at the [Friendica Support Group](https://helpers.pyxis.uberspace.de/profile/helpers).
If you can't use your default profile you can either use a test account [test server](http://friendica.com/node/31) respectively an account at a public site [list](http://dir.friendica.com/siteinfo) or you can use the Librelist mailing list.
If you want to use the mailing list, please just send a mail to friendica AT librelist DOT com.
