I think the common theory on tons of backlinks from the same website is that they are not very beneficial to you, one will suffice, etc. But examine this... Google "hip hop music" and you'll see hiphopmusicdotcom.com is at the top. No argument that this is an extremely competitive niche. Well take a look at the sites backlinks. Most of them (thousands) come from two popular and related websites where it has paid links. Interesting, yeah?