Kyte - get your own space called a TV, also as a widget and mobile access, private or multi-authored, content can be video, images, even produce polls and slideshows, etc, and has real-time chat, but not video streaming like Ustream…learn more. I guess this reminds me of pickle and cellblock, only Kyte allows different types of content formats. See similar media mashup services.
Twittercamp - desktop app to monitor Twitter updates, suited for large screens.
urlTea - shorten URL’s and annotate the URL eg. http://urltea.com/1?lol_at_the_photo
Notice that after the “?” you can annotate a string of characters…if you you this with Twitter and you bust the 140 character limit, it will still post as long as everything before the question mark is intact.
Besides shortening the URL with a bookmarklet, you can also do it with IM by adding firstname.lastname@example.org to your contacts or alternatively you can use it with IMified.
You can also post to Twitter by IM using IMified, handy when Twitter IM is down.