Bidding means placing a bid price that you are willing to pay as an advertiser on a pay-per-click search engine. The highest bid for a given keyword achieves the top spot in the PPC search results. In Overture, the top three bids are “featured” on Overture’s partners’ sites, including AOL, Altavista, Infospace, and others. The minimum bid amount on Overture is 5 cents per clickthrough. a pay-for-performance pricing model where advertising (such as banners or paid search engine listings) is priced based on number of clickthroughs rather than impressions or other criteria. Overture is an example of a search engine which charges advertisers on a pay-per-click basis.