i do play it but i havent played too much online, but the little i have i never saw a clan option, nor is the online all that well implimented. If you want to have a clan or anything in a rockstar game your best option will be red dead redemption. I am not sure if they will have clans, but i know you can make posse's. the in game posse is 4 people but the posse might be able to have more members then that but only letting you join games with 4 people. not 100% on that. but game looks awesome regardless, comes out next week i think.