What do all the column headers and categories mean?
Target Reach: This column shows how many people, out of the total US online population, who fit your criteria, can be found on each site. US Reach: This column represents how many people out of the total US internet population can be found on each site. Coverage: This column indicates, as a percentage, how many people from the total number of people online who meet your criteria can be found on each site. Composition Percent: This column indicates the percentage of the site’s audience that meets your criteria. Composition Index: An index is a measure of how a given metric compares to an average, such as the average US internet user. If a site indexes 100 in college graduates, that means a given visitor to it is as likely to be a college graduate as any US internet user chosen at random. An index of 200 means the visitor is twice as likely to be a college graduate, 50 means half as likely, and so on. The higher the index, the better the site is at attracting that type of audience. Note
