Shill bidding is defined as a seller making a bid on the property in order to increase its selling price, search standing, and attractiveness to actual bidders. This type of bidding also extends to anyone making a bid who is associated with the seller, such as an agent, friend, family member, or co-worker.
Some auction sites have strict policies concerning shill bidding as well. Well-respected sites remove listings where sellers bid on their own items and will often suspend or limit their accounts as a result. Some may even report the person to law enforcement. We at RealtyHive support these practices as they're key in discouraging sellers from bidding on their own properties.