It's been something like a year and a half now since I started FlowingData. It has grown quite a bit since I was talking only to myself. However, with that growth has come greater (financial) responsibilities while I have remained a poor graduate student. Fortunately, I have these two great sponsors to thank for helping this little blog of mine keep running as well as giving me the chance to give back to all you readers.
Check these groups out. They are doing amazing things with data.
Eye-Sys - They make scientific visualization doable and emphasize data exploration. Take a look in case studies for the recent Digg example.
Tableau Software - It's about statistical visualization for Tableau. Analytics is the name and useful visualization is the game.