When deploying Instant Messaging with Live Communications Server in your company you of course expect to get enterprise degree service levels out of it.
But what happens when you mix a consumer based service (Like Yahoo, MSN and AOL) with an enterprise level deployment of LCS with PIC federation?
Well for me the answer is obvious you get a Consumer degree service level out of it - and this is also what my experience shows me.
What is important here is that if you are a customer or a consultant talking to customers/decision makers, then its worth to emphasize the point that PIC isn't an enterprise level service.
Also if you are implementing and/or troubleshooting PIC then its worth to look at at the LCS PIC troubleshooting posting.