As reported by Businessweek:
Considered by many to be the industry standard for audience tracking on the Web, comScore will use a revamped yardstick that could give advertisers, software makers, and investors a better handle on just how many people are using the programs. Under the new method of calculating, almost 586 million individual Internet users viewed a piece of widget software in November, 2007, according to an exclusive look at the data comScore provided to BusinessWeek.com. That’s nearly double comScore’s estimate in July, the last month it measured using an old system. ComScore plans to release the new widget usage data in mid-January.