We're all far more engaged now in information architecture, data-mining and visualization than when Matt wrote that in June 2006. Simply constructing and posting searchable databases is a basic step; more layered and textured graphical presentations – like some of those the Charlotte Observer used to help explain its ground-breaking discoveries of home-lending abuses – show us the next step.
There are many steps yet to go. We've got to become increasing sophisticated and adept at uncovering data-rich news (Matt's main point) and presenting it in ways our increasingly demanding audiences require.
This evolving art is widely demonstrated and examined in many places. There's a good starting point here, where numerous data-visualization blogs are linked.
I'm particularly fond of this splendid technique regularly employed nowadays at the New York Times: