Heh, some things are unworthy of a post at all, so you get a comment.

I don't have any, as I tend to avoid thinking about it—my understanding is it's Japanese manga-style stuff involving gay underage schoolboys?

No more dodgy than hentai stuff involving lesbian schoolgirls really, although I'm always bothered by underage stuff.

If my understanding of what it is is wrong then maybe my opinion needs updating of course.