Comment 15 for bug 296853

I also would like to see support for MS LCS, but I am very pessimistic about that. Excerpt from http://www.informationweek.com/news/showArticle.jhtml?articleID=53700175:

"How is Microsoft hijacking SIP/SIMPLE? Start at the client-to-server side, the protocol exchange between the Windows Messenger or Microsoft Istanbul clients, and an LCS server. The SIP/SIMPLE protocol currently has some limitations when it comes to IM, particularly when it comes to buddy list management, so Microsoft has gone to great lengths to fill in the functionality gaps by implementing their own protocol payload and exchange sequences. While this may fill in the gap left by the fact that SIP/SIMPLE is still being developed, and while it may improve the available feature set, these extensions are Microsoft's intellectual property. That means they must be licensed by any third-party that wants to have access to them in an official manner."