I registered my .org with
http://discountdomainregistry.com - it's $15/year.
http://easyspace.com was $14.99 but you had to pay for 2 years, and i wasn't too sure about their service. anyways back to the free domain - i registered
http://www.pop-fan.com with them, hoping i'd be able to um... transfer... it... somewhere.. else... but i can't.. so unless you want to register your domain so you can't have it for yourself, then don't go there. thank god i didn't put in the domain name i REALLY wanted, or i would have been so pissed!