Hunsinger's Disease
A psychological condition in which the subject must compulsively purchase clever domain names, based on their availability rather than on any perspective use for them.

This differs from domainer, in that sufferers of Hunsinger's Disease frequently have no intention or capability of monetizing their purchases.

Named for Ed Hunsinger, a computer programmer and well-known figure in Silicon Valley, who is owner of hundreds of clever, unused domain names.
The only cure for Hunsinger's disease is Godaddy.com. Just try registering a domain there and you'll see why.