Rendezvous Q&A

Have a look here: Reference Counting
Albeit I got no official feedback on my RendezCon sample code, this Q&A states that what I proposed for handling multiple services that are spawned by multiple network interfaces was correct. Remember: you heard it here first :-)
Sadly iChat AV even in its current beta does not comply to this Q&A.

Another nice Q&A lists the Rendezvous service types used in Mac OS X.