Building Geo-Aware Apps with Maps and Geofencing

Hi,
I want to highlight a point on videos topic, windows phone apps dont have video downloading feature if also downloaded with youtube downloader the videos cant be exported to sd card or video albums & cant be shared through bluetooth, please develop some apps so that youtube videos or some other site videos can be downloaded & exported to phones albums & shared.
As of now, the videos can be downloaded but to view it we have to open the particular app & view the videos which is not at all worth when compared with Android OS.
very informative.