VeriSign says that the number of web sites opened just to publish PPC ad links is rocketing, Computer Business Review Online reports (via MediaBuyerPlanner).
Every week, speculators are registering close to 250,000 domain names to "test" their traffic potential before being discarded a few days later.
If the names can generate more than the $6 or $7 registration fee per year, they're kept. If they can't, they're returned within the five day grace period. The speculators put up collections of Google Adsense or Yahoo Overture text advertising links relevant to the URL.
