> You also expressly grant and assign to CL all rights and causes of action to prohibit and enforce against any unauthorized copying, performance, display, distribution...
Seems to be vital to this case.
My personal interpretation/hope is that the right to sue for copyright infringement is nontransferable, which would give Craigslist no standing to sue. Individual posters could sue, however.
[1] https://www.eff.org/files/filenode/righthaven_v_dem/order6-1... (See also: http://en.wikipedia.org/wiki/Righthaven_LLC_v._Democratic_Un...)
I suspect this may have been one of the introduced terms.
It says that you own everything you post, but you are granting them the rights to use it. The only unusual bit is that you are additionally granting them the right to go after people who scrape your content on your behalf.