When it comes to video games a clan is often just a group of gamers who enjoy playing with each other. Others are more competitive and played ranked matches for clan pride off a site such as www.gamebattles.com. However, somtimes you will find a group who is sponsered and travels to tournaments and other such events.
Clans have been around for years and years, but with the popularity of halo2 and it's avialible clan support, clans have gained more noteriety. You can find a clan that fits nearly any catagory you can imagine, ranging from people who live in a certain area to people who enjoy making movies with video games.Their are also some crazy names out there. the most unusual I've seen was ZXS: Zoogenic Zenogenesis Slayers. If you enjoy playing games a clan can be helpful in finding friendly and/or competitive matches.