Carsabi (YC W12) was also affected by this recently. Especially annoying midway through my car search. It is really disappointing that Craiglist won't license their data.
I'm kind of surprised that a company based around scraping CL would get into YC. I know a lot of people do it, but it wasn't exactly unknown that it was against craigslist's TOS.
Yeah, they still have quite a lot of content, and to be honest craigslist listings were some of the worst on there. Still, it was handy to just have one go to place for car shopping.