While many of the ads are directly bought from the brands advertised, Playwire also uses carefully screened, 3rd party ad networks. These networks may use aggregated information about your visit to this site, such as the number of times you have viewed an ad (but not your name, address, email address, or other personal information), to serve ads to you on this site. Some ads are targeted specifically to the content within Math Playground.com and we have taken careful measures to ensure that these ads link only to family friendly advertisers. In response to the new COPPA rules, Math Playground.com does not permit behaviorally targeted ads on its site, and instead only shows contextually-based ads or other carefully-selected ads which are not based on a user's browsing behavior.