What exactly does Mediabase do?

Mediabase aggregates airplay. They track how often your music get played on the radio and report your airplays to the charts (Billboard and others). According to them, Mediabase monitors the music airplay of more than 1,800 media outlets in over 160 markets. Mediabase also publishes airplay charts in Pollstar every week. The charts compile by them are used on nearly all radio countdown shows and dozens of pop-culture consumer sites.