Visiting Dublin is always a pleasure - even if the weather is rainy. Most of the day I was at Trinity College reading master theses (which is the second best part of being external examiner, best part is to have lunch at the 1592 ;-)
In the evening I met with Aaron Quigley and we talked about some ongoing display and advertsing projects in our groups. He told me about one of their recent workshop papers  on public displays where they investigated what people take in and what people remember of the content on displays in an academic environment. It is online available in the workshop proceedings of AIS08 . I found it worthwhile to browse the whole workshop proceedings.
 Rashid U. and Quigley A., "Ambient Displays in Academic Settings: Avoiding their Underutilization", Ambient Information Systems Workshop at UbiComp 2008, September 21, Seoul, South Korea (download , see page 26 ff)
 Proceedings of the Ambient Information Systems Workshop at UbiComp 2008