no no no no no no. Craigslist can't scale like google did because it's LOCAL. If I'm the only person in my country using google - I still have value. If I'm the only person in my country who uses craiglist - it's useless. My local craigslist sucks. There's pretty much nothing there but spam.

Just make sure that when you launch - that you're not targeting SF/NYC.

(I will admit - there is local competitors that you would have to beat in most markets - so it's still tough - but it's not always cl.)