if you think soulja boy's "writing" them for anything but the money, well, i've got a bridge...
well obviously, but there is a ton of middle ground between soulja boy and the kinda stuff you posted which is pretty much exclusively listened to by white boys who think they have some deeper understanding of "real hip hop."
vBulletin's search function is... I won't say useless, but "only situationally useful" fits. It doesn't recognize 3-letter words, nor does it see terms in quotation marks as a single term. I guess I thought that was common knowledge.
Unless I'm searching for posts by X user or something specialized like that, I almost always use Google. If you search like this, it turns up all kinds of results: site:typologycentral.com "hip hop"