Do you need a chat or message system?
When We begin to work on Freshdeal detect early that we’re a platform communication between users. But We had doubts in use our limited resources in developer a chat(real time XMPP) or message system (like a inmail Linkedin).
We decided very fast: Message System. Why? Our users is around of the world and is very difficult that 2 users coincide are active both. Our platform (freshdeal) is a B2B marketplace and the users is professionals with time very limited.
You know that in the first stage (MVP) is the limited resources We need focus in functionality and make a basic tools for communication and to validate the idea and Chat system is a strong investment.