Looks good! Unfortunately for me I had just started working on something very similar. Mine had only a web interface and optional Facebook Messenger bot to pro

Looks good! Unfortunately for me I had just started working on something very similar. Mine had only a web interface and optional Facebook Messenger bot to proxy your chat through (I don't need another chat client). But overall the same general idea to solve the problem of reliable IM without giving up personal info. Good luck with it! I'd suggest when a user first visits the site, you generate a link for them to share, which will start an IM between the two users when opened. Then offer each user more options, registration, etc.