There are old posts of a newb type user with bitcoinfrenzy.com in their signature, and with no new posts.
They have not adjusted Their estimated earnings to the newest difficulty.
They have been known to javascript mine on browsers:
https://bitcointalk.org/index.php?topic=14481.0 (suspicious for a "profitable business")
This site is advertised on Google.
The checkout does not have SSL!
I have a very new friend who wants to throw money at bitcoin stuff and found this site. He asked me to look into it. This scares me. I do not recommend this site.