There is nothing wrong with pointing out (flagging) the things that you are seeing to admin. That way they can also know to keep their eye on the persons posts.

Confronting descrepencies in the threads doesnt go well & is usually frowned upon (ugh, have been known to have done that in the past just asking questions about contradictions.....not a good idea) but i have PMed others posting with a simple beware message so they can keep their awareness also.....most have seen it to when i have done that.

Found that people csn only lie for so long even on the internet before they get caught in their lies & some just have disappeared rather than confess.

It is sad when people feel like they cant just be themselves where ever they are.