After that google launched google talk messenger a new alliance looks to be announced between MSN and Yahoo to allow Interoperability between MSN and YIM.

In a competitive realignment of the heated Internet industry, Microsoft Corp. and Yahoo Inc. are expected to announce Wednesday that consumers using their free communications services — including instant messaging and computer-to-computer voice calling — will be able to communicate directly with each other for the first time, say people familiar with the matter. The expected linkup of Microsoft’s and Yahoo’s communications services would immediately challenge the leading instant-messaging market share of Time Warner Inc.’s America Online unit. AOL has a 56% market share world-wide, according to research firm Radicati Group Inc. It has long resisted letting users of other instant-messaging services connect with its own. A combined Yahoo and Microsoft could command 44% of the global instant-messaging market, according to Radicati.

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