I bought a 25GH contract from them on the 3rd of September this year. It cost me 0.07266911 BTC.
So far on returns I have received 0.00791469 BTC. It pays out weekly every Sunday, so if it keeps paying out, then I'm sure I will ROI at some point. They host awesome competitions too which will definitely help if you win (
https://bitcointalk.org/index.php?topic=792178.0), and by getting people to join with your Ref link, you will gain more GH which will definitely help also.
If this information helped you, and if you still want to sign up, Why not do so using my ref link so that I can also benefit? It wont affect your mining experience at all if you do.
http://pbmining.com?ref=gordoh
