Skype began its foray into the browser last year by hooking up with Facebook to handle its video chat features. But the service is not available on browsers beyond the social network's walls. That implementation also relies on a browser plug-in, whereas the ads' wording suggests Microsoft will use web standards this time around, which makes sense as their plugin-free Windows 8 Metro environment is almost ready for prime time.
The move would make it possible to use the popular voice and video calling service on upcoming Windows 8 tablets through a web app, and pretty much on any other device / OS combination supporting HTML5 and other standards, including Google's Chrome OS where users can't install stand-alone applications.
Microsoft closed its $8.5 billion acquisition of Skype in October 2011 and finally brought the service to its Windows Phone platform in February this year. The company has said it plans to integrate Skype across numerous consumer products such as the Xbox 360.