Well, ive just joined. Ive felt kinda guilty about not joining for a while now. CGtalk has helped me more than any tutorial or book ever has, and its a great place for inspiration, advice, and feedback. I dbout ill bother much with the exclusive cgsociety member benefits as i only really browse the galleries and WIP sections, but i would gladly support the only forum ive ever really been involved in.
Β£16 for a years worth of cg-karma (and some fancy features) aint bad.
Free nuts! 
