I am not familiar with that, and there are a lot of scams out there. Watch this site, you'll see questions from some of the victims when it is too late and no one here can help. So, it's great that you came to a place to get advice from professionals BEFORE you acted on an advertisement.
I suggest you trust only government backed and largely recognizable resources:
Advise & Resources from the National Association of REALTORSÂ®Â·
Advise from the Federal Trade Commission
If you have a government loan, there are special resources available.
1-888-995-HOPE A HUD-approved counselor affiliated with the non-profit Homeownership Preservation Foundation is available 24/7 to help you examine options. These counselors will help you understand opportunities that might be available to you to help save your home; and theyâ€™ll even talk to the bank on your behalf. NeighborWorks http://www.nw.org