I dont invest never in mining site, what dont show his locatsion and otherthings.
http://cointellect.com/ is right now only site what i can trust, this is registed in my country and all is clean and pure.
Country company register: https://www.inforegister.ee/en/12563932-SONERA-CORPORATIVE-OU
Few houers ago im looking Zeushash - looks same as HP , better stay away..:
1. no aadresses
2. no names
3. no phone...
Actually next "going holidays" site
http://www.1a20.com/scam-fraud-activities/hash-profit-hashprofit-com-can-easily-be-a-scam-and-run-away-with-your-money/
http://www.badbitcoin.org/thebadlist/index.htm#C
Just because a site CAN be a fraud because someone says so it doesnt have to be written in stone.