I just got a call from this number too! I did a pipl.com search and found that it is a number in Chicago? I didn't answer and now that I see that it's some kind of weird phenomenon I guess it was a good idea not to. ^_^'
07.22.10 - Spanish message. The only thing I understand is "press 9". Which I do and then ask them to remove my number from their call list but they hang up on me. I have NO IDEA how they got my cell number.