It's meant to make it easier for journalists and citizen activists to review bills, document dumps, etc (and on the pay side, help law firms read through and review discovery materials). A challenge has been that I'm neither a journalist or a lawyer, just someone who is motivated to help out where I can when I see something that seems screwed up; and wanted to build a tool that would make it easy for people to take 5 minutes and help read / review a bill, etc when they were on the bus or when they had some downtime. The failure mode is obvious in retrospect: I started building it without knowing people directly impacted by the problem I was trying to solve -- it was a good problem to solve in theory; but without a concrete problem to solve it's very hard to land on the right set of solutions.
I still tinker with it (uploading docs that seem interesting, messing with features), but I've mostly moved on to other projects until I find the set of people who are presently feeling the pain.