I wouldn't be too much bothered by what tenth grade kids like, because they don't have any damn money.
Is there something wrong with that? Total US advertising expenditures for 2011 were $144 billion[0]. UGC is of course quite difficult to monetize, but it's not impossible.
[0] http://kantarmediana.com/intelligence/press/us-advertising-e...
Children drive an enormous amount of consumer spending. Their usage patterns matter.
If anything, extracting money from an adult may be easier indirectly by their children than directly.