1.) Relevency - Make sure the site is closely related to your own
2.) PR - still a very important factor
3.) Google Backlinks (not backlinks from yahoo site explorer, most of those won' count. Should have at least a couple in google that are of equal or greater value)
3.) Uniqueness (does it pass copyscape?)
4.) Traffic (if it has any PR at all, it should be better than 2 million in alexa)
5.) Number of outbound links (should be less than ~30 per page)
6.) Age of domain ( should be older than 3 months. I like to see at least a year)
