Okay, so I've got 32 people on my player list for the Friday morning Caves of Myrddin game. Each week I draw four names at random to get on Google+ and play. So far 25 players have got a chance to play. Most of those folks have played once, twice, maybe three times so far. Here are all the people that have played more than that:
Blixa the Thief (Zak S) - 6 expeditions to the Caves
Hugo le Bâtard (Jeremy Duncan) - 5 expeditions
Philip of Luxembourg (Evan Van Elkins) - 4 expeditions
Pavel the Great (Mátyás Hartyándi) - 4 expeditions
Zak tops the list largely because he stays up late and is two time zones over, so if someone no-shows he's available whenever I broadcast the message "Need replacement player right now!" The other three guys have just had the dice go their way when it came time to select players. Actually being available for the play time also helps. A couple of other people would be on this list, but they couldn't make one or two sessions when their number came up.
I'm bringing this up and identifying these guys because they all happen to be cool dudes. If you're going into my stinky little dungeons and want some clues on how to survive and thrive, these would be choice guys to hit up for advice.