The IDC has predicted that ringbacks will overtake ringtones as the largest revenue source in mobile entertainment by 2010. Quite a statement, especially when Google reports search trends for free ringbacks is virtually non existent compared to search trends for free ringtones. Most people have no idea what a ringback even is, so let’s clear that up; a ringback is the sound you hear when calling someone, and mobile carriers have plans to allow music to replace this stale call tone. But will this really replace ringtones and even free ringtones as the most popular mobile entertainment? Companies such as RealNetwork are betting on it, and investing with mobile carriers to make ringbacks mainstream.









