You'd think that by now I'd know where all the web content for MSMQ was on Microsoft.com but no. Here's the page for Highlights & Top Issues . Hmmm.... "Last Review : 30 July 2009" but the KB articles referenced are all at least 3 years old. I'd best find out who owns the page and get it refreshed for MSMQ 4.0 and 5.0.
[[Edited March 3rd, 2010]]
"Highlights & Top Issues" page was still viewable in error. It's now been archived/deleted.