A few twitter products I can recommend:

Generate Cash At Will Using Twitter
Using the Turbo Cash Generator You Can Generate Cash At Will Using Twitter. It’s All Done Automatically. Just Sign Up, Enter Your Twitter Details And Start Earning.
Generate Cash At Will Using Twitter

QuickFollow – Grow your twitter followers
Allows you to grow your twitter followers directly from your own website, without having to send them off to twitter.
QuickFollow – Grow your twitter followers