Shill (or fake) feedback is when a scammer sets up multiple ebay accounts, or uses friend's or familie's accounts to falsify their's or someone else's feedback.

There are two main shill feedback scams:

• The first is when a seller uses multiple ebay accounts to artificially inflate the number of his/her positive feedback.
  
  This offence is commonly know as "feedback padding", and is often used by scammers looking to give their victims a false sense of security. Often more buyers are willing to bid on the scammer's auction because of his/her positive feedback ratings.
  
  
• The second main type of shill feedback offense is known as "feedback bombing". This is when a person uses multiple ebay user IDs to purposely damage another ebayer's account by leaving multiple negative feedbacks.
  Due to feedback bombing the victim often needs to register a new ebay account.

There is also another common feedback scam which is know as "feedback extortion". This is when a scammer demands that the victim do (or not do) something, at the threat of an undeserved negative feedback being left.Some common feedback extortion techniques are as follows:

• Buyer tells seller to: "Give me the item for free, or at a discount, or give free shipping, etc. Or negative feedback will be left."
  Seller tells buyer to: "Leave positive feedback even though item was poor, damaged, misrepresented, etc. Or negative feedback will be left."
  
• Scammer tells victim: "If you leave negative feedback for our transaction I will retaliate and leave you an undeserved negative feedback for no reason." (This is commonly known as FEEDBACK RETALIATION)