"2006 Ad Tracking Study. The survey results are based on 1202 telephone interviews (via computer assisted program) with a national random sample of adults (ages 25-54) who are equal decision makers and who have bought or sold a home within the past two years or plan to purchase or sell a home within the next two years. Brand awareness questions are based on a sample of 1202 respondents with a margin of error of +/- 2.4% at 90% confidence level. The study was conducted between March 6th - October 2nd, 2006 by Millward Brown, a leading global market research organization."