Haha, you guys are idiots. Do you even know what a clan is? You're treating them like clubs.
You should only be in one clan, and contribute to that one clan. Being in more than one and you're letting down your clanmates by basically saying "Screw you, you're not that great so I went in another clan too". If one clan isn't good enough for you, don't join it! OR, try and make the clan better.
Greedy stuff. :\