Gregory's Server
I was one of the first users on Flickr and Twitter and Blogger and many other social sites, and you know what they ALL had in common? People who came in and declared "The way I use this thing is the right way and anyone doing anything else is bad and wrong!" And in all cases the community evolved away from those people soon after.
I know there's an influx of new people here right now, and I know that can be scary for the existing community. But you'll be a more effective spreader of good social norms if you welcome people and help them get accustomed to the new place with kindness and generosity, rather then scolding and making people feel unwelcome.