The CL blog stinks of entitlement.
Craigslist "stole" the classifieds business from local newspapers. Now they are accusing others of trying to "steal" the "CL idea" from them.
I am one of (probably) the few who actually prefer a CL type interface. But the way CL is behaving in the face of competition is just embarassing. If someone wants to reshape the data, then you have to let them. The data is not the property of CL. If users do not want their data on some other site, then that's their issue to raise, not CL's.