Craigslist has just about the worst user interface / search / features that I can imagine. I look at craigslist and see a conservative and understaffed company headed by a man with many virtues, but takes a near-religious stance against any kind of improvement, evolution, or change on his site.
I admire craigslist a lot for not exploiting their users. But c'mon, lets upgrade the search/filtering/user experience a little bit! I don't think the users would cry over one new feature every year or so. I wouldn't.
Hm. Better not vaccinate my kid then, since he's more likely to get whooping cough if he's fully vaccinated.
The reason why worry kills more people than work is that more people worry than work.