It comes from the City of Chicago. The City of Chicago actually had been collecting lobbying data for quite some time. Under Mayor Daley they just didn't release it, and then when Mayor Emanuel came in, he released it within the first couple of months of his term.
There were initially 14 different data sets, while now there are 17 or 18 different data sets. There was a handful of us who had been advocating for open data for quite a few years. During the Daley administration, we hadn't really been able to get a significant amount, and when Emanuel starting releasing stuff, we were complaining once he actually gave us some data that it was incumbent on us to actually do something with it.
I started looking for data sets we could do something with. I saw these 14 lobbying data sets, but if you look at one data set, no one can learn anything from it, so we basically got volunteers. We got a couple of guys from Groupon together, three people from Webitects, a couple of volunteers. One woman was riding her bicycle across the country, going to work for Code for America in San Francisco. She stopped in the city and Google sponsored a hackathon. We got this team together. We went from seven o'clock in the morning on the hackathon, and by seven o'clock in the evening, we pretty much had it done. Some were really high-quality designers and developers, and we all worked together, but the interesting part—