Why is it, mature tgps . . .
 

have categories such as teen?

Growing a niche tgp/mgp is a little harder than a general equivalent, so maybe this explains it. But why setup as a mature specialist in the first place?

maybe the teens look old

It's the natural order of things to jerk from oldest to newest ????

or the milfs look young ;)))

I thinkk it is easier te get some traffic floading when you offer multiple niches. That way he can also trade with teen sites for example.

Why do people click mature, shemale and gay links on my teen TGP?

That's just my point -- why have those categories in the first place if, like you say, you run a teen tgp?

I know multiple niches make growing a site easier. It just mystifies me why a specialist in a certain generic niche (mature, for instance...where you can have mature hardcore, mature shemales, etc) would include teen. Your traffic is not filtered for that niche.

Much better to either start a general site or just set up other niche sites?