Personally- I like sites like dudesnude since the pics are big and they work well on mobile sites. I've had a Blackberry, Android and iPhone and they all work well with the site. You should aim to that standard
Don't be like some sites where you can see 3 pics then you need to sign up with your credit card, those site suck ass - esp when they show the thumbnail and don't let you enlarge the pics.
As for site names, there are many out there that done really have suggestive names:
POF, Okcupid, Gay411, gayromeo, etc.
You don't really need Bareback in the title, but rather a disclaimer when people join that members are all barebackers
You'll have a much easier time naming the site. It should be sometime easy and quick to type out without embarrassing people if someone accidentally picks up the phone. My bro once was on my phone and my history showed a much of hook up sites and he managed to only see dudesnude and ask if it was gay porn.