Not a big fan of sourcefed anymore. They f'ed up pretty bad with the richard dawkins honey tweet thing. As for justin bieber i am happy they finally arrested that girl.
Well it is this video: http://www.youtube.com/watch?v=dWgzA2C61z4
Basicly get ram from a good brand with a good look. Speed does not make any difference at all, only the fact that they are more expensive.