Amid the hoopla of Google IO, a few Google-related items sailed by almost unnoticed — such as a cool update to the Android version of YouTube. For the first time, YouTube will start downloading videos it thinks you might want to watch, whenever you’re plugged in and on Wi-fi. That’s great news for commuters, for example, who can now watch videos when outside their mobile coverage zone (or without paying for costly video downloads over 3G). YouTube will start choosing and downloading those videos based on your past browsing habits, as well as what channels you’re subscribed to. Read the full story at Mashable.