For example, AOL' s audience size persisted at nearly 23 million, or about 36 percent of June's Internet Audience. The number of people in U.S. households who went online increased by 3.2 percent. The current size of the home Internet audience for June was approximately 105 million, compared to 101 million for May. Portals and search engines experienced zero percentage growth from May to June. These top 25 Web properties are ranked by unique audience. A property is defined as a consolidation of multiple domains and URLs owned by a single entity.
Unique audience is a measure of the total number of individuals that visit a property.
An impression is counted each time an ad banner is fully loaded onto a user's screen. Advertiser Impressions in millions Percent Reach 1. Microsoft 659.6 56.6 2. CDNow 165.8 24.8 4. LinkExchange 145.0 13.7 6.