I'm copying and pasting from a reply I had below, but to respond: "Although I think this is a bad place to stake your claim, the posts themselves are arguably p

I'm copying and pasting from a reply I had below, but to respond: "Although I think this is a bad place to stake your claim, the posts themselves are arguably purely public data the second they hit Craigslist. The data conveyed is factual, there is no IP, and it's being disseminated publicly. It's similar to (and yes, there are a lot of ways to poke holes in this analogy, but for the sake of argument...) a town crier shouting an advertisement out in a crowded square and one of the listeners taking that information, traveling to another public square, and repeating it."