Peter and his colleague showed up and walked me through using Segment. The told me that I was the only one using their API via curl and that they were impressed with what I had been able to cobble together so quickly.
Peter took out a tiny Moleskine-type notebook and drew a diagram of what was next on the roadmap for Segment. I recall how neat and detailed the diagram was and how thoughtful Peter was about what he was doing next.
Peter and his colleague also revealed to me a sort of sister company they were familiar with that was creating an API around professional identity as a service. This sounded a lot like https://www.fullcontact.com/ but was something else.
I've since moved on from focusing on that type of data. HN seems to feature a fair amount of content about Segment. I enjoy keeping up with their progress and wish them all well.