TweeMaid asks you to pay $15.95 to go through and clean you from following anyone that does not follow you back. There is an exception list where you list who not to unfollow. The system asks for your Twitter username, email and then presents oAuth for authentication purposes.
Why you would be one of the ~271 people, at the time of writing, that are listed to have paid $15.95 for this service is beyond me. We have tons of follower management tools listed in the categories above for you to use for free.
Not only that, there is no other help, about or what if pages anywhere on the site. Just a bland info@ email address.