SocketCluster itself gets between 6K and 10K downloads per month - Almost all of these are direct downloads. Some big soccer/football leagues websites use SC to broadcast results of matches in realtime, also, some education startups and some bitcoin/trading startups are using it too.
A lot has changed but I've stuck to the core mission and the project just keeps evolving to adapt to changing technologies. In terms of monetization, finding a market fit has been a slow process; ironically because underlying technologies have been moving so quickly that I didn't want to commit to the wrong tech. Recently, we have been really excited about Docker, Kubernetes and other container/orchestration software and are doing cool stuff with them.
For a while I was worried that technology would evolve in ways which would make SC irrelevant (and it looked like this for a while) but over the past couple of months it seems that the opposite is starting to happen and it looks like all the pieces are actually starting to fit together.