Well, I took a gamble and bought a 2500 Mh/s... The site is clean and has a good feel about it... gives me confidence in their technical ability, and I just like the concept. I'm also throwing my 650Mh/s of mining power into the pool... what the heck The worst that can happen is that I lose a little money.. but the best is that I'm a part of something pretty cool and make some money! So I say the upside outweighs the possible downside.