Google today is introducing a new way for Android developers to generate revenue from their mobile applications. The first product will be rewarded video, where users can opt to watch a video ad in exchange for in-game currency, virtual goods or other benefits. The feature may make developers happy, but it remains to be seen how users react. Reception will depend on how the videos are introduced in the app. This is not a scenario users would respond well to unless this was presented as the only way to play a popular, previously paid-only game for free. Rewarded video has worked for some apps where users have come to expect a free product. That could include free-to-play games or other services where subscribing is an option, not a requirement. After it introduced tiers offering on-demand streaming to compete with Spotify, it rolled out a rewarded video product — so to speak — of its .