This is hysterical - truly hysterical. Especially since its probably pretty true about 'butt traffic' in here; and a butt-specific site like that probably would do well, LoL! Great sense of humor, HP!! 
I was just thinking about a good idea for a niche site and was going to create a separate topic, but what the heck... In here seems like as good a place as any. If this is already in the plans - woot!
What about a niche site solely about contraversial topics? You could call it blatantarguments.com or something silly, ha! I have something like the Huffington Post site in my head - except, of course, all the content is written by hubbers.
HP is infamous for piles of ramblings on all kinds of controversial topics - and yeah, the majority of them are bad. However, some of them are really interesting. I remember reading a hub about a year ago that went into detail about why we don't need money or an economy - that didn't sound like too-insane of a rant.
I think a site like that could become popular.