Targeting options and source lists

Reacheffect campaigns target by GEO, device type, operating system and browser, and then by source: the publisher sites and zones the traffic comes from. These two articles explain how the layers combine, how to read the Statistics report by source, and how to use whitelists, blacklists and the Filters page to keep the sources that convert and drop the ones that do not. Source IDs are returned to your tracker through the click macros described in Tracking.