For two years, from 1996-1997, the Project on Policing Neighborhoods (POPN) studied police and citizen interaction, attitudes, and behaviors in 24 neighborhoods in St. Petersburg, Florida, and Indianapolis, Indiana. This report focuses on POPN findings about what affects the public's satisfaction with police. Although the most important factor driving citizens' opinion of police appears to be perceived quality of life--sense of safety, for example--researchers found that how a police officer behaves during even routine interactions with the public is nearly as important. Courtesy and follow-up seem to make a difference. The authors discuss what police administrators can do to improve overall public satisfaction with police.