Blogroll for tag bulletin
zolow - A digital bulletin board
Twitter: What are you doing? - A global community to put out their thought in a short meesages/microblogging entries (up to 140 chars), aloow people to connect via social networking, and interact via sms, im, or on the web
Jaiku - A web service similar to Twitter to allow user to share conversations from the web or phone
IntenseDebate - A web service that embed better commenting system to blogs and other websites
Disqus - A on-line service to embed commenting system to blogs and websites
