Does anyone out there know whether an organization must be registered as 501 (c)(3) in order to have a .org extension in its domain name? Are there any other requirements for having a .org domain name or can you just use .org like you would .com, .net , etc.? Thanks.

Ah, I found your post you refered to on the other thread. From what I see at the FAQ on the pir.org site, anyone can register a .org domain name, you do not have to be a non-profit business.

See FAQ #4 here: http://www.pir.org/get/faq/general#q4