Mandatory content ratings were added to Apple's App Store back in iPhone OS 3.0, and now it's Google's turn on news that they'll become obligatory for Android developers "in a few weeks" (at least, those that want their content in the Market). The company teases the fact that they'll be showing the ratings for all apps along with other "Android Market upgrades in the coming weeks" -- presumably timed to coincide with the release of Gingerbread -- and that any dev that fails to specify a rating level for their existing apps will have their content automatically listed as "Mature" (that is, t