Generally considered to be a member of part of a gaming community. These people join with a group of friends and such, that are in an existing clan. They would tag their names as to represent their clan and even take part in matches alongside their clan mates for the prestige of being the best at what they do, not just for themselves, but for that of the clan.

The word clanny has been around for years, and it's typically obvious how it came to be.