Select TV programs and ads now encourage viewers to "Shazam" them, using the audio recognition features of Shazam apps in order to receive bonus content and discounts. The company has over 140 million users -- who download apps and tag songs -- and is adding 1.2 million more per week. It also has millions of paying users for its subscription iPhone apps, as well as significant revenue from advertising and affiliate purchases, All Things D reports.
The company sells at least 300,000 songs per day. Meanwhile, Shazam is joining a growing list of companies trying to get viewers to "check-in" on the Web while watching TV.