What the hell is wrong with Craigslist People

I was looking at a go kart for the kids the other day
found one I liked, the post was 6 days old
so I replied (no phone number in the add, so I emailed him mine)

waited two days, didn't hear back

emailed a second time, still no response

today, the add is still up, 13 days old
and the funniest part it, when I punched in a few key words and the location to find the add, a second add popped up from someone else who was actually trying to reach the seller