I got about 14 follows within 2 hours of using this service and the good news is that they are all real users, not some that are automated and auto retweeting. I ran audit check on it - and they were legit. I'm not giving it 5 stars yet because I'm not sure that it's more effective then using a chrome extension to mass follow people by searching on a tagged subject (within limits of 200 a day). I ran that while I used this service to look at it - and I got 40 new users that followed me back within the same 2 hours that I got 14 users from this service. So 4 stars for real users, just not sure it's the best way to get followers.