I have like 500, but I cheated I used twiends and twittfame. I can't post links, so either PM me for links or google it.
I am having around 670 followers and most of them are well know to me online. They are my friends from either forums or from social networking sites.
433 on Twitter. Twice that on FB to be honest. Not sure why, always thought it would be easier to get followers on twitter.