If you are, you could do a lot worse than joining Fast Followers. You earn credits by following others, and pay others with those credits to follow you. I'm selling advertising space on my Lifes Big Canvas twitter feed to help fund myself through art college (1 tweet in 10 will be an advert and some of the money goes to an art fund and to a cancer charity as well, so I'm hoping this doesn't annoy people!) Having more followers would definitely be of benefit, I'm sure.