I’ve had a lot of people ask why not use Skydrive instead of Dropbox.
As you see, Microsoft states that Skydrive is not designed to be used for storage of proprietary application files that only one specific application can use. Instead, they have a list of files they “support”. Images, videos, audio and documents (Office+PDFs). The Skydrive API will not let you upload any other type of file without some tricks.
I know I could have cheated the system by using fake .doc or .pdf file extensions. This could work. But I don’t feel comfortable doing that. Microsoft can screw up any such attempts at any time by looking inside of a file instead of just relying on file extensions. Or they can start failing applications that do it.
Skydrive sometimes meddles with the files you upload. For example if you upload an image larger than 2048×2048, they will downscale it whether you want it or not. I am not sure about that, but they may also recompress all uploaded images to JPG – as if all the images you ever wanted to use were photos! That would definitely screw the texture packs, which need lossless compression and alpha channel, none of which is provided by jpgs.
Personally I think Microsoft are shooting themselves in the foot trying to exert too much control here, and thus limiting the use of the service in a lot of legitimate cases. They believe that average Joe only cares about pictures, videos and mp3’s, and has absolutely no use for anything else. That’s probably true in 90% of cases, but why throw away more hardcore users? They are who makes the platform fly by creating apps that hook more users in.