# #221: Circular Revenue.

An episode of [Developing Perspective](https://invisiblenetwork.ai/podcast/6818168107), 29 May 2015, 15 min.

Audio: https://audio.developingperspective.com/developing_perspective_221.mp3

Some high level thoughts about WWDC and my excitement for it. Then, a few thoughts about whether mobile advertising is in a precarious position.

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