Messenger Level 400

About the Messenger Level 400 category (2)
Exactly how do Circles work internally on the addressbook side? (2)
Can someone identify this hash for me? (1)
Questions here (4)
Msnp links (14)
Best place to find MSNP4 documentation? (3)
Looking for some help with Switchboard session management (1)
MSN Messenger Server for MSN 4.7 MD5 (1)
MSNP Implementation (5)