there's no doubt about it, this is a scam. And, thank you intelligent people for recognizing the fact that any call from the 215 area code in relation to a job should be scrutinized! I called after seeing your comments, and was informed, "This is Rebecca..." After I gave her my name, she asked, "Are you only looking for a job or a business opportunity?". I told her, "a job of course". She was in a hurry to get off the phone, however, I managed to inform her, "BTW you should know your scam is all over the Internet". Good job people! This economic situation is hard enough, I too am sick of the predators!
I too got a phone message from Rebecca Rivers (something about resume on a job search web site).
Anywho's reverse lookup gave no ID; Intelius's reverse lookup was no hit on land line but did hit on cell, not worthwhile to pay to find out more.
Seems fishy... thanks for the head's up and for this site.