The links are currently split up into three types: AX Groups, AX Blogs, and AX Links.

The reviews use a 15 point scale and three categories:

Usefulness: How helpful the site is.

Design:  How pleasing the actual site design is. Does it burn my retinas or annoy the heck out of me when I visit?

Return Potential:  How often will I return to the site?  How is the site updated?