I have been getting calls as well, 5 this week. It is "INTERNET RETAILER" magazine. Call customer service at 312-362-0107 and give them crap. It seems to be a verifiction vendor.
Rec'd call at 9:50 AM CST, May 26, 2011 in Milwaukee. Answered but no response, no background noise on the line. I am part of an IT group so I agree that an IT newsletter solicitation sounds plausible.