I think Pusher is an excellent example of something which can be quite simple to setup and use (socket.io) but people are willing to pay if someone maks it real

I think Pusher is an excellent example of something which can be quite simple to setup and use (socket.io) but people are willing to pay if someone maks it really really easy and just plug and play. I think if visitor.js came with some nice extra things to do with the data rather than just displaying it (country list with yours preselected, only showing social media buttons from the referring website). I also believe the pricing for visitor.js was a little off-putting to people but not sure how you would price / rate limit a SaaS like that..