The easy way to get more twitter followers is to follow more people. Go to as many different trending sites as possible and click on people. The more people you click, the more will click you back. If this sounds simple, it's because it is. When you see these url's with get 100 free followers, it's a scam, they just want you to visit their site, plane and simple. Don't fall for it.
The Girl with the Dragon TattooThe Girl with the Dragon Tattoocom/