They have been contacted a couple of times already.People are welcome to email and tweet them too.The bigger the community voice the better regarding getting added to new exchanges.Bigger community equals more consistent trading activity in their eyes and there is no point getting listed and having another exchange with low volume.
The role of the community is crucial to a platform or product, as XBC should not just be in that exchange, so there are at least a lot of exchange options and people are free to vote for it.