I wonder why craigslist hasn't shut down http://housingmaps.com http://housingmaps.com yet. They appear to be doing the exact same thing as padmapper and mapskr

I wonder why craigslist hasn't shut down http://housingmaps.com http://housingmaps.com yet. They appear to be doing the exact same thing as padmapper and mapskrieg, albeit with a much smaller feature set.