it is what wiki says about ban: Google's JohnMu recommended that individuals who have legitimate sites (in line with Google's Webmaster Guidelines) on the ******** subdomain send a reconsideration request to Google to have their specific site excluded from the ban.
so just for a sake of free sub-domain you will compromise with your seo plus most of the advertisers will say no to your site

and what if like they do like co.tv