Wonderful add-on! Rated 5 out of 5 stars
The thumbnail web page preview feature is very useful for eliminating keyword spam ad sites - you see them before you waste a click on these lamers.
The search suggestion feature is also very useful, especially when I'm stumbling over what search terms to use. It's helped me zero right in too many times to remember.
This add-on is also CONSTANTLY updated, and is not some forgotten, unsupported extension by it's developer.
If the thumbnail preview's happen to load a bit slow for your tastes, try Faster Fox add-on. It made a noticeable difference with this feature and with page load times in general.