@kikix
I already use you service to build sites like:
http://amateur-homemade-porn.com/
right now I have 4 niche sites like that and will build one site for each category that you have. It's really easiest way to build tube site and don't need to host anything.But that is easier part of job, much harder is to promote that sites and start getting SE traffic. In that part services like easyxsites.com can be useful.