Twitter Tools and Scripts
Have you ever wonder why some company starts following you as soon you are mentioning it’s name on Twitter? Or some user instantly follows you back if you start following to his tweets? These are techniques used by many to gain popularity on Twitter.
TweerLater – many interesting automated features including auto-follow/auto-unfollow.
christopherspenn.com – PHP script that auto-follows anyone that follows you.
staynalive.com – script does exactly the same thing that previous – follows anyone that follows you.