- You can search books - this is a cool bridge between the collection of the knowledge on the web and the collection of information in books.
- They display info on sites, in a floating window, and you can tunnel to an area on Amazon with more site info including reviews.
- Your search history roams including which results you've visited
- They've got a toolbar, like everyone else.
I can actually see myself switching to this as my primary search engine. The search results are powered by Google.