The The best of the bunch. Period. Rated 5 out of 5 stars
Excellent - at last I've found you!
WOT's a mess; AVG LinkScanner takes over your computer and puts Yahoo all over the place; SiteAdvisor has turned into the very popup-ridden malware it is supposed to keep away.
This utilizes all the databases around and summarizes them through an in-browser (only) bit of expertise we can all adapt to do and display as much or as little as we want.
People [like me] need to know that NO TOOLBAR MUST APPEAR up top... whatever buttons you want from the standard LinkExtend toolbar (as configured by you) can be moved, individually, to some other toolbar you are keeping. Then you can hide the LinkExtend toolbar (via View>Toolbars); the "stolen" buttons will still function. I know other users made similar comments, but if it were made much clearer in the description...
Anyway, bravo to the developers.