It looks like Microsoft is planning to launch a web-based version of its MSN Messenger IM client. At this moment the MSN Web Messenger is already available for some testers. Only a computer with an internet connection and a browser is needed to communicate trough this new service, no additional software needs to be installed.
Some sites like WBMSN and eMessenger already offer this service.
It is expected that Microsoft will launch this service later this year.
Source: Tweakers, some screenshots and more info can be found at Mess.be
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