A more intellingent-sounding scam, but nevertheless still a scam. Their IP address 162.222.213.136 is the same as uswhss.com (both registered recently), and here is an article linking uswhss to butterfiylabs.com (note the deliberate misspelling):

http://www.reddit.com/r/BitcoinMining/comments/1uisv4/fake_butterfly_labs_website/