The Download Now link will prompt a local download of the Google Chrome extension. To install the extension directly, open the file using your Chrome browser.
Lists possible sites and keeps score of likes and dislikes.
Extends concept of bookmarks to include sites unseen so far.
Cons
A couple of tweaks that would improve it.
a) Remove confirmation click - save time with single click approvals.
b) Align options Like / Hide / Don't like to LH margin, so clicks don't require mouse control.
Summary
An excellent approach to monitoring links for future reference.