There are a number of instant-chat systems that already exist and this is not much different: Olark is just another contender.
In fact, after closer review, Olark is the evolution of the once Hab.la system.
In just a few seconds you can install the chat-system and use it for your property:
Use it as a support system, online chat, prayer system, or something entirely different.
Style it via CSS, have multiple operators (if you upgrade), get detailed reports and statistics, and even use it on the Blackberry and/or iPhone.
Some sites that use things like this creep me out. I like your thoughts about Using it as a support system, online chat, prayer system.
Seeing it in action, it could serve as a nice support system for my CMS.