It seems like the usual solution to the marketplace problem would be essentially promising one side that the other exists. See a recent comment by Patrick (pati

It seems like the usual solution to the marketplace problem would be essentially promising one side that the other exists. See a recent comment by Patrick (patio11) that explains this better that I can: https://news.ycombinator.com/item?id=7906856 https://news.ycombinator.com/item?id=7906856 More specifically, you could look at doing manual work to make it seem like there is an existing market, similar to what the Reddit(?) founders did in the beginning where they create posts under different accounts. I can also think of services like TaskRabbit where you can supply or at least partially fill in for part of the market.