An advertising platform, typically driven from Search Engines and/or directories. The model typically follows a CPC (cost per click) model, only charging a fee for visitors that reach your website. Paid Search ads appear two ways: search placement and content placement. Ads within search placement appear when searchers search for a particular term that you have elected to purchase. Ads appear within the content placement model when relevant content is served from the search engine partner (news sites, industry sites, etc.)