Don't fall for it, it is straight up fraud out of Canada.  I got a bogus check in the mail with instructions to cash it and keep $250 and send $2650 to a woman in London via Western Union.  They provided this number to call for further instructions.  They pose as a research firm looking for secret shoppers.  Don't be their victim!  I am a cop in California and am actually quite amused that I received thier solicitation for suckers in the mail!