I use DBPedia frequently, and it is good to see an augmented and curated commercial version. I was a little surprised to see it cost $0.99/hour - expensive but OK for occasional use. However, I noticed that they offer a $499/year subscription also. (Plus EC2 costs for both plans).

I have been frustrated by the DBPedia SPARQL endpoint occasionally not being available, so running the augmented version on an EC2 would be great, cost ignored. I have also set up my own endpoint using Virtuoso and the free DBPedia dumps, which takes some work setting up.