Getting more followers on Twitter

So, after finding out that RevTwit requires 50 followers in order to post ads, I went looking for ways to get followers.

I highly recommend that you find followers who are actually interested in what you're writing about, or have sites related to yours so that your readers will be interested in the people you're following. However, I got a little lazy and decided I would get up to 50 first so that I could actually post ads, and from then on out I will concentrate on those who actually care.

So, in my search for ways to get more followers I found a site called "Boost Twitter Followers". It has a paid VIP option, but there is also a free option. The downside to the free option is that you are obligated to follow VIP members in order to get points which you can then spend on following free members. The up side is that the free members are obligated to follow you in return. They also have a referal program, in which you get 30% commission if anyone you refer decides to use the VIP program. I'm not trying to pressure you guys into using it, just putting my link out there... I think you can sign up for a free account with the referal and then if you ever switch to VIP I would get credit. I don't really expect anyone to spend money if they don't have to, though.

http://www.boosttwitterfollowers.com/members/plug-ins/paypal_affiliate/refer.php?affID=437

Another site I found is http://www.twitterfollower.com which is similar. It's a free service, but you are obligated to follow anyone who follows you. The one problem I have with these sites is that there is no way to search. I wish I could find one that let you search by interest or something so you could ad relevant people - so let me know if you come across any better sites.