this is such a lame post here. maybe you should walk the walk and actually give some advice instead of going around telling people how much you think they suck.
anyway -- to the OP.....i bet your biggest problem was links that weren't from actual web site posts but from forum profiles and comments. i had a very similar situation where i thought i was diversifying the anchor text and being "natural" but really i was using the same group of anchor texts and a lot of the links were from forum profiles that were edu! i thought that would be good, but no, it really hurt me and when i removed the forum edu links i suddenly came back to page 1 in my ranking about a week later. i then blasted with a blog network and moved up page 1, no penalty. so........i dunno what other people are trying to say here about all these other ideas. i think if your links get posted to blogs and websites as administrator posted links in useful posts that look like the admin is actually trying to spread some useful knowledge around the interwebs, your links will get counted as higher quality. it really goes back to the fact that google uses natural language algorithms to understand the level of quality of a web page. not sure if that helps you, but good luck.