Search engine Google has decided to close a loophole that ties up millions of Internet addresses to boost ratings.

In a press statement, Google said that it will look for names that are repeatedly registered and these will be dropped within a five-day grace period for full refunds. These names will be dumped by Google's AdSense software and will prevent people using those names to generate advertising revenue from claiming them temporarily.

Closing the loophole, known as domain name tasting, should make it less possible to make a lot of money by testing hoards of names, and will keep just the ones that turn out to generate the most revenue. Currently, this ties up millions of domain names at any given time, making it more difficult for legitimate individuals and businesses to get a desirable name.