This is in response to Dumbed Down. I too am a highly intelligent and very smart person compared to some of the people I've worked with but not all of us have heard of sites such as the Craiglist, Youtube, Myface, Myspace, etc. etc. etc. until some one else was talking about it. The first time I had heard of Myspace was when some teenage girl was molested after giving a complete stranger her cell phone number and met with him at the school she attended. So it's not "preposterous" that your co-workers sister didn't know about this Craiglist. Not all of us "cruise" or or have even heard of the some of these sites just because you do. Preposterous you say? No way.