Initially the idea of Xtube sounds scary to VoD sites, but so did TGP's to the "image sites". If you watch any of Xtube regularly you will already see the trend. Pay sites are actually POSTING their own videos with the url "watermarked". The same thing is actually happening in the mainstream world on Youtube as well. Just recently NBC posted the entire trailer for that new show Kidnapped.

Xtube and sites like it, while free, will be the new "TGP" marketing tool.