But there are people who use them as rental options, particularly when you travel to the same place frequently.

Perhaps that is a consideration. Are the boards only about increasing frequent flyer/renter benefits, or is it about travel advice? I think that comes up as a conflict more often than we think.

I don't frequent that forum, and only jump on in between or while I am multitasking on phone calls and web meetings. I can't check all posts all the time. Which is why I think organization needs to be clear, because searching through unorganized posts can be very difficult and threads get missed and repeated.