Actually you got lucky having 95% using this follower generators, ive tried something like that and got about 50% result
Its better to use good old Mass Follow For Twitter plugin for Chrome, works fine, great setups available and no need to leave your passwords or gaining points
I thinks it works well for me i have tried this in my other twitter account and have the same result. I will check that mass follow for twitter this is the first time i heard about it. thanks for sharing