For me, its depends. If you have been cool since day one and then one day, you post something that is totally off base with your normal posting, then I will just chalk it up to you having a bad day, or maybe that was just an issue that you're passionate about.
But if you're someone that only comes around to make disrecpectful comments on certain topics, then you all of a sudden try to be nice
well, my red flag is up when it comes to you.