If you're interested, a very similar article, from Ars Technica, was posted yesterday. We had a discussion on it at [1]. Geofeedia has since posted a response [2]. [1] https://news.ycombinator.com/item?id=12688548 [2] http://blog.geofeedia.com/a-commitment-to-freedom-of-speech-...
I don't really buy that they have adequate safeguards against the police using this data inappropriately. Seems like a bold claim to me and requires further explanation. In the Ars story, they allege that as many as 500 different police departments across the country are using their data.