Love the live thumbnail feature Rated 5 out of 5 stars
This is great! The little thumbnail view is live too, which you can see as you scroll the window. Makes me want to use the mousewheel on the thumbnail view to scroll it.
How about an option to mouseover the thumbnail and pop up a larger thumbnail, or pop up a thumbnail if otherwise not shown.
A feature I have been waiting for is an indicator in each tab showing if there is JS activity, or a flash video is playing, etc. Also, how much memory each page is consuming. Is this data available?