Internet Explorer 10 for the next version, Michael Muchmore of "PC Magazine" tested Platform Preview 1's performance and HTML5 support with both Microsoft's and third parties' test suites. In his test, Platform Preview 1 performed better than Internet Explorer 9 but not always better than the competing web browsers. On September 13, 2011, Microsoft released the developer preview of Windows 8 to general public, which came with Internet Explorer Developer Preview (the first full browser incarnation of Internet Explorer 10). Although Internet Explorer is the last major web browser – among Mozilla Firefox, Google Chrome, Opera, and Safari – to support spell checking,
Kogan.com the combined time of designing for Chrome, Safari and Firefox." Kogan accepted that it was unlikely that anyone would actually pay the charges, stating that the goal of the campaign was to encourage users to download a more up-to-date version of Internet Explorer, or a different browser. The 'tax' was the most talked about topic on social media service Twitter on the day following its launch. Several weeks later, search results for kogan.com disappeared from Microsoft Bing search results, with Kogan stating "We hope Microsoft were not too offended by what we did with the IE7 tax and this is