1. Advanced RSS feed reader.
2. Friend list from YouTube, MySpace, Facebook all in one tab with update notice.
3. Drag and Drop photos to sharing websites.
4. Blog Editor which supports most major Blogging sites.
What I liked in the little time I had trying this browser is the MyWorld tab which includes everything a person usually do when going online each day. A real start page (GoodBye google as my homepage).
The browser is now version 1.0 beta so a lot of improvement are coming in the way. Try it out and post your impressions