I've not seen the demand for one myself. Secondly it runs Java which can be pretty CPU intensive, our first priority is the speedy service of web pages. I'd say more than likely not.
I believe there was a few members hosting their own open minecraft servers. There is nothing stopping you from hosting your own for other rsbandb members. The minecraft topic: http://rsbb.ca/t79695
"it runs Java which can be pretty CPU intensive" I run one. I allocated everything I could to it, closed everything and with 4 people it was still very, very, very laggy. PM me.