I've actually noticed myself limiting myself (2 myselves in one sentence = grammar erk) by using the last.fm system, actually. Like, I want to balance my charts out to be more like muziks. Not so I have one bandhave 1,000 plays, with my 46th most played band having only like, 45. Which would have been the case, in some cases (2 cases in one sentence = grammer erk...again).
It might help if I manipulated my charts like muzik has (playing the same song 42 times in a row to make it on of his top 50 songs?), but meh. Right now I'm just trying to balance my charts out.
EDIT: btw, don't take offense to that muzik. I might be mistaken. But if I am, seriously, how the fuck DO you listen to the same song that many times? Seriously.