MSN Protocol Documentation

Does anyone know of a good (up-to-date) reference for the MSN protocol? I have found some sites with simple google searches, but they all seem pretty dated. Does anyone know of a good source of documentation that they can vouch for... that they have u开发者_如何学Gosed recently?

Thanks!

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Try this wiki.

http://code.google.com/p/msnp-sharp/wiki/KB_MSNP21