For that last few weeks I have been part of a clan. It is a social clan with a few events. The only thing they ask is that you help out once a week on maintaining the citadel. This isn't a problem as it takes maybe one hour and the ring you get afterwards gives bonus XP on a selected skill.
I like the social part as you can ask questions and someone usually has the answer and I try to help other clan members in various tasks and quests. This is what Runescape is at its best, players helping players enjoy the game.