Share files! Let's use SkyDrive because it is installed by default under Windows 8 on all these new computers that we have. Wrong. The Metro app is just a stupid pseudo web interface, you still need to download and install the proper Windows app to get folder access. OK well lets install it on my Windows 2003 server - NO! Vista or newer only - so forget sharing with our developing nation partners. Well let's share a folder so we can access files directly in the SkyDrive folder. Wrong! SkyDrive does NOT sync shared files/folders to your local drive. Well at least SkyDrive is cross platform, iOS devices can ... WRONG! Microsoft's iOS app is broken - nothing, failed on 3 devices on two different networks.
TLDR: Use DropBox because Microsoft software is half arsed. Always.
