Dear Sirs,
We are releasing www.retweetfollow.com, a Twitter users search engine that allows you find and follow tweeters searching by keywords in their tweeted URLs.  RetweetFollow is based on the BackTweets API, but it presents results which are more focused on users who have tweeted the links. It shows all their Twitter profile details and provides tools to easily follow them, organize them in lists, export them as plain text or to send tweets thanking them for their tweets. We think that RetweetFollow is a powerful tool to find users who are very interested in particular topics.

Be free to test the application, it won’t send any tweets or DMs without your permission.

For your information, RetweetFollow is our 3rd Twitter application after www.locafollow.com, and www.followfriday.es.
We have tried to be concise but you can find more information about the application in the about page (http://www.retweetfollow.com/content/about) or in the FAQs page (http://www.retweetfollow.com/content/faqs), and we will be glad to provide you with any other details that you need.

Kind regards
  Alfredo