In an online advertising system, advertisers compete with each other for advertising space. There may be multiple advertising positions available, where the placement of advertisements is determined by an auction. To encourage competition, some advertisements may be presented with enhanced features. These enhanced features create an incentive for which advertisers can compete, thereby increasing the effectiveness, usefulness and/or profitability of the advertising system. The application of enhanced features may be determined using at least one or more of pricing information, performance information and advertising information.