8. It is allowed to receive feedback for a service, as long as the service was either paid or there was risk involved. An example for risk is doing a firecape service for someone, on an account that contains more than 1M RS3 GP or 07 GP. As we are aimed particularly at the RuneScape market, you are only allowed to give or receive feedback for graphics if there is at least $1 worth of goods (based off of common transfer rates) transacted. Feedback for free product will not be allowed.
Found here:
http://osbot.org/forum/topic/48743-aio-market-guide-read/