Twitblogs is targeted towards Twitter users who want to write more than 140 characters, or want to embed images into their posts, etc.
Users actually donâ€™t even create accounts. Instead they log in with their Twitter credentials. And any posts created on the site are automatically posted to Twitter as well to get extra exposure. So heavy Twitter users can use Twitter for the quick messages and Twitblogs for the longer stuff, and everything flows into Twitter automatically.