It is really about the atmosphere and mood that you create. I greet everyone that comes to the tournament, I take the time to get to know them as a person and make small talk. I'm genuinely interested in what is going on in their lives. I make and maintain connections. 

We do things like a clix giveaway for new players giving them older C/U/and some Rs from older sets to help them build up their clix pool. I also have a standing 'borrow-a-figure' rule where people can email me in advance and borrow figures from me, even chases.

I have to say that I can be a bit aggressive to people that I think are messing up the flow/mood of the venue. The store doesn't seem to mind since I put butts in the chairs. I do this to keep things healthy.

I publish the scenario for Friday every Monday and email it out to our group. We also post it on the store bulletin board (electronic) and in the store weekly email.

It is also important to do things that are rewarding to yourself. No one will be having much fun if they perceive that the judge is not having a good time. It is one of the things that killed my venue previously. I always bring a team to play, with the same build requirements as everyone else, and play the bye round if we have an odd number of players. It keeps me interested and I get to play about once every three weeks. Also, I regularly (about twice a year) take a month off of judging and have some of my players take over for me. This lets me get my hands ‘dirty’ with actually playing the game, or just taking the wife out on a Friday night, and keeps me fresh. Judging can be a pretty thankless job if it is done right. You should know the rules and if you don’t know the rules, make your best guess and find out for the following week what the right ruling should have been. Don’t be afraid to admit you’re wrong.