Here I am, i'll follow back: http://twitter.com/phpgator I'm not sure how twitter exactly works, but I'll try to refrain from spamming.
Just started using it a couple of days ago. I have close to 100 followers, but only a few additional visits to my site from there. I think the benefit you get from it isn't just in having a bunch of people following you. It's when you have active followers who you communicate back and forth with (you know, like friends). People observe this communication going on and want to see what you're about, and then come visit your site to learn more. I'll definitely be exploring it more.