We've been having some very interesting chats with our Clients about Henry Jenkins's concept of the "Transmedia Narrative" and how this relates to marketing. You can see my thoughts on the subject in this recent article in Campaign.
Our esteemed CEO, Stephen Maher, has been experimenting with foursquare of late. Maher is Mayor of several places including Wandsworth Common.
Convergence Culture by Henry Jenkins is a must-read book for we agency types as we adapt to stay relevant in this crazy-fast world of ours. (Amazon link)