Top Interests Chart - added 2/15/2008
Under yours or anyone else's profile page, you'll see a new tab called "Chart". This will show you a pie chart of the top tags from stories you've hooted (which includes what you've submitted). This is a pretty cool way of seeing what you're in to. In the future I'll add time based filters so you can see what you've been into more recently. Check out mine

GroupHoot! Facebook App - added 12/19/2007
Add the GroupHoot! app to your profile

Automatic video detection - added 12/4/2007
You can now submit a link to YouTube and a thumbnail of the video will appear in the summary of the article and the full embeded video will display on its story page.

Photo overlay - added 12/4/2007
Your uploaded images will look all the more prettier now as they are overlayed on top of your story.