Should we moderate what can be sold on Shoply.com?

We offer super simple ecommerce software (shoply.com)the goal being to make it quick, easy and cheap for anyone regardless of tech skills to open their own shop and start driving traffic and sales

We launched a couple of weeks ago and already have over 1,000 sellers, most of whom are selling things we don't have any problem with.

some though have launched shops selling things like, cigarettes, pets, seo services, sex toys.

do we stick to being a pure software provider and let people sell whatever they want, or do we begin to actively moderate and curate what can and cant be sold?

http://shoply.com/market/