The practice of reserving domain names that are "hostile" toward a company (or its staff) is not uncommon. The most recent case has been that of investing company Blackstone Gruop and its CEO Stephen Schwartzman.
Tim Bradshaw of the Financial Times reported that Blackstone Group has been purchasing web domain names such as blackstonesucks.com and schwarzmansucks.com. This kind of "defensive registration" is common for large companies and there are many vendors serving the market to support a company's defensive domain registration initiatives.
Some of the premier vendors in the space include MarkMonitor, SafeNames, MelBourne IT and others. These vendors typically offer some variation or mix of domain portfolio managment, brand monitoring, trademark protection, and domain recovery services.