On the smartphone front in the three months ended April 2013, Apple and Samsung were the only manufacturers to see an increase in market share.
A new product from ComScore takes into account both mobile and desktop when sizing a site's total Web audience. That would help some companies, like Facebook and Yahoo, but would hurt others, like Microsoft, which would fall to fourth place from its prior No. 2 slot.
February's numbers also show that Groupon, Zynga, and Pandora had the greatest percentage gains in mobile out of the top 50 companies.
Nearly one in four smartphone owners also make use of tablet computers, according to data from the market researcher.
Feature phone owners are upgrading more to smartphones -- and mostly those running on Android -- according to a new report.
ComScore's stats for February show that Pinterest really is on fire, with a 52 percent increase in unique visitors over a single month.
Yahoo sites were the most popular destination for U.S. Web users in January, ComScore says. Yahoo was followed by Google sites, Microsoft sites, and Facebook.
The domain taps into a nickname given to Microsoft's upcoming Xbox One, though at least one person doesn't like it.
Two categories of search market share will now be presented: one that only counts searches done with explicit intent, and one that takes a wider view of search.
comScore figures suggest Facebook is now bigger than MySpace. Everyone believes this. Or do they?