Finally, someone who is taking a holistic view of collaborative BPM. See Paul Liesenberg's article on Architecting Collaborative Applications. Too many articles have focussed on Collaborative or social BPM as being just about creating the business process with some web 2.0 gimmickry.  


In fact as you quite right say, entire processes are about collaboration across people, departments systems and even organisations. BPM supports and is an integral part of a collaborative architecture. I am currently editing a piece on Collaborative BPM by one of my colleagues Marc Kerremans who talks about this trend.