ICANN 
The non-profit corporation responsible for IP address allocation, protocol parameter assignment, as well as domain name and root server system management functions.
http://www.icann.org/Domains Reregistered for Distribution of Unrelated Content - A Case Study of "Tina's Free Live Webcam"
Research documenting 4525 domains registered by 'Tina's Free Live Webcam.' Each domain was previously used by another registrant, and Tina seems to have specifically sought to re-register the domains as they became available. Includes a discussion of the scope of this problem, policy implications, and possible solutions.
http://cyber.law.harvard.edu/people/edelman/renewals/
The Register - Cracking down on cyberspace land grabs
Reports on an IP-block hijacking when "Los Angeles County had been hit by a growing type of hi-tech fraud, in which large, and usually dormant, segments of the Internet's address space are taken away from their registered users through an elaborate shell game of forged letters, ephemeral domain names and anonymous corporate fronts."
http://www.theregister.co.uk/2003/06/11/cracking_down_on_cyberspace_land/
