Information about users that is collected in this site: IP address, server name, browser, date, time, pages and lessons visited, OS, duration of the visit, and region. This information is not shared with a third party, but enable us to figure out users that may be out of compliance with legal use of these PowerPoint presentations [download them just for viewing (temporarily download them) vs. download them to store them (users that download all lessons in just a few minutes)]. We reserve the right to report to the corresponding authorities, any kind of abusive use (These PowerPoints are protected by Copy Right Law). We apologize for any inconvenience this may bring about to bona fide users.