Even though it's only available in a Windows version so far, Google's open source Chrome browser is reaching a lot of people, according to data from Nielsen Online. Nielsen reports that between Sep. 1st and Sep. 7th, more than 1.9 million unique visitors in the U.S. visited the Thank You page for the Chrome browser. The data lines up with similar findings from NetApplications, which has found that Chrome has about one percent of browser share--ahead of Opera. Which browser does Chrome not appear to be taking share from, though?
That would be Safari.