Twitter has filed a cybersquatting complaint over the domain name twitter.org, which is currently being used for one of those bogus survey scam sites.
The domain has been registered since October 2005 — six months before Twitter was created — but appears to have changed hands a number of times since then.
It’s been under Whois privacy since mid-2011, but the last available unprotected record shows the domain registered to what appears to be Panama-based law firm.
Hiding ownership via offshore shell companies is a common tactic for people cybersquatting high-profile brands.
The UDRP complaint, which looks like a slam-dunk to me, has been filed with WIPO.