Starting January 12th, 2011, Google’s YouTube app for Android “welcomed” in VEVO’s library of music videos. To watch them you need to be running Android 2.2 (Froyo) or higher, and be running the latest version of the YouTube app.

With the new influx of content it’s no surprise that Google wants a way to pay for all the additional bandwidth they’ll be pushing out. To address that, tens of thousands of YouTube videos on Android devices will start getting “pre-roll” ads — ads that run before the intended video starts to play.

Who can blame them? YouTube now serves up more than 200 million videos on mobile devices every day — 300% more than in 2010. The mobile ad market is growing at a ridiculously fast rate and should surpass US$1 billion this year.

If you’re not on an Android-powered device, you’re not immune from pre-roll ads for long, their next step is push ads “across other mobile platforms, beyond Android native apps”.

Source: YouTube Blog