I was just thinking today about comment spams and it just flashed why is there no trackback spams. I googled around and found other people are talking about this. But my idea was, if I can find sites that talk about my topic and are highly rated by google, if I trackback to them I get a link point from each of them. Which means I go up google's page rank system. This means I get listed higher.
So Can Google's PageRank System be manipulated using Trackback Spams?