Notice added on 21st July 2013:
Due to high response on free trial and after completing many accounts twitter followers increment for free, we are stop providing 250 followers as a free trail
Another Notice Added on August 3rd. 2013
As discussed My friends that we have stopped the free followers for twitter promotions, which means you have to pay atleast a minimum amount to gain followers from twitter. This is just to support our costs which we will incur on our resources.
If you want to test also you have to pay 10$ which is the minimum amount