sorry if this is a silly question or part of this site's rules which I should know, but how come when people post video links to other sites (like youtube, or xhamster), they replace certain letters with capital "X"... i.e. instead of
http://... they will put in hXXp://...
I imagine thats a rule here, but why is that? is it somehow to prevent Google searches from steering someone to this site?
thanks