I don't think they favour people, is what I am saying - only in the same way a teacher favours those who have always got their hands up.
They basically have no choice but to respond when someone talks to them, so the more you talk to them, the more attention you get.
I don't think there's any bias. Not really. Maybe oldie over newbie, slightly, but only due to better level of mutual understanding/oldie more likely to comprehend the way the site has to work. iyswim
it's only natural