If this is one of those call backs regarding work form home jobs, my guess it is this ad:
http://pire.gagabices.com/nike1749529448b-98400008selection824513412
I was curious and plugged in my phone number. Shortly thereafter, from 2:46p -3:38p, the phone rang five different times, none of which did I pick up because I did not recognize the caller.
So there you have it people. Mystery solved. It's an internet ad calling to follow-up.