Backlinks is a plugin which is basically copies the google backlink functionality. The reason I started it was because after a plugin problem where I stopped receiving trackbacks in some popular posts, I couldn’t see who had linked to me unless I did a manual search. That annoyed me to no end.
Plus, because a substancial amount of people still use Blospot which stubbornly refuses to implement trackbacks, you do not see the full number of pages linking to you.
Thus Backlinks was born. At the moment is at a very basic version and I plan to add some more nice features. You use it by simply adding its tag to your templates (see the readme file).