There's a new No. 1 property on the web, according to comScore, and for the first time it's Google.

The search leader finally surpassed Yahoo, according to comScore's measurement, which tracks total audience. Though Google has long been the web's search leader, it had trailed behind Yahoo in the audience department. However, sites like YouTube, Picasa and Gmail have finally put Google in the audience lead.

However, Google doesn't have much of a lead over rival Yahoo. The two companies are separated by about 466,000 total visitors.

But Jack Flanagan, comScore's executive vice president, told The Associated Press that Google's audience lead could create a "halo effect" that may boost the company's other products.

That halo effect could be just what the doctor ordered for YouTube. Despite a massive audience, Google hasn't found a way to monetize the site's traffic. But Google executives have made finding a business model for YouTube a top priority for this year, and the site has begun to release a slew of new products to court advertisers.

The comScore news comes one day after it was revealed that Google's search business is expected to surpass Microsoft's operating system business.