Brring is a free ringback service. With Brring you can upload your own music or audio files and personalize your ringback tone for your friends to hear when they call! You can use Brring as a second number, or for your social network. Each inbound call is supported by a short commercial announcement, so there is no cost to you at all.
Earn rewards for helping to expand the Brring network, and helping tune the ads to best fit the interests of the friends in your calling circle.