A Shill in crypto refers to an individual or entity that actively promotes a crypto asset with the aim of influencing market price or confidence, often without disclosing any connection or vested interest they may have in the asset. This can be done by providing false positive reviews, recommending investments without clear risks, or using social media to create the impression that an asset is more popular or valuable than it actually is. Shills can harm investors as they can mislead them into making decisions based on dishonest or incomplete information.