On April 28, the new Federal CIO Vivek Kundra addressed the U.S. Senate Committee on Homeland Security and Governmental Affairs. His statement (click here) is interesting as he clearly discusses the evolution of the use of IT in the public sector from (1) the basic stage of simply having an online presence, to (2) improving services and back office operations, to (3) the more nirvana stage of "context-driven" government.
He is clearly moving in the direction of practical, citizen impacting initiatives that are focused on exposing government information so that it can be packaged and delivered to citizens "when they need it - and where they need it." I would add one item to the list -- "in the format that they find it useful". His testimony gives a fictional account of someone living in this world of information accessibility. The fictional person received information "when they need it" and "where they need it" but the adoption rate of these services is also dependent on the information being elegantly displayed, intuitively accessible, and readily understandable.
We can summarize this as "when they need it, where they need it, and in the format that they find it useful."