I've written for several upstart fantasy websites..
And,I like FantasyManCave,but it's a little too long.
People don't like to type long website addresses,so I'd try to shorten it.
Like maybe,RotoForce,RotoBallerz,Head2Head,or FantasyBling.
My last fantasy website had good stuff,but I think the long name (MajorLeagueFantasy) deterred people from going there.But,if you persuade people to bookmark you're website,the length of the name wouldn't hurt that much.Bookmarking is VERY important for getting return costumers.