I'm all for debate and people sharing their feelings but, if there is one phrase that I think could come in handy when the posts get repetitive or heated it's, "You may be right."
It's so simple and it neither claims victory or admits defeat.
It is gauranteed to end any confrontation w/out fail.
Please consider this phrase the next time you are arguing with the same person about the same thing for the hundredth time....after all, "We all may be right.".