how to increase number of your twitter followers

Here is list of 5 good free services to get a lot of Twitter followers that I am using personaly:

http://ow.ly/gbFn
http://ow.ly/gblJ
http://ow.ly/gbCT
http://ow.ly/gbAP
http://bit.ly/vJT5Q

When you sign up for these services, you will get your referral link. All those who sign up these services through your referral link become your followers several levels deep. This way you can get a lot of followers. You can put your referral links everywhere: on your twitter account, on blogs and blog posts, forum signatures and posts, websites and other places.

Even many famous Twitter users are using these services.

You must give them your Twitter username and password so they can do all the process of following your referrals.

Another usefull tool is:

http://twittgeek.com/

TwittGeek is a Twitter application that automatically follows 200 targeted people based on keywords you write. This Twitter tool is 100% automated and it is free.