Not sure why I said suspect, only report someone if you are sure they are underage.
Not to be argumentative, but what constitutes "being sure?"
A: Are you really 18?
B: Yeah, I am.
A: You don't talk like it.
B: I'll be 18 soon. Close enough.
A: What's your real age?
B: I'm 16 but my dad doesn't care. He lets me use is card.
The only thing that a conversation like this proves is that B has already lied at least twice.
And if I were forced to bet a day's pay on it, I would bet on B being a 25 year old looking to jerk someone around before I would bet on B actually being 16.
Again, if you are uncomfortable with something, then by all means avoid it. But it is not the players' responsibility to police the site for the Devs.