Buying, selling, or participating in more than five vehicle transactions over a 12 month period, without possessing a vehicle dealer license. This IRL scam involves commercial car sellers concealed as private parties. The act of "curbstoning" is illegal in more than 20 states in the USA and is punishable by up to a year in jail.
This crime has now spread to the online community where these illegal car dealers misrepresent the condition and/or background of the vehicle. Often, sellers will post vehicles for sale on online auctions such as eBay.