I considered that. I guess i'll have to actually read through some terms and conditions!
Seems odd though.. I am sure there are more than just my parents that will share a device and use their skydrive primarily for family pictures and videos. Makes sense to me that they should be able both use it equally depending on who is logged in.
Temporary workaround. If anyone else comes across this issue while on a secondary user account. you can simply use file explorer to navigate to the location Skydrive is installed on your primary user. Default=C:\Users\David(or whatever your primary user account name is)\SkyDrive. Then right click favorites, add to favorite and voila. At least full access through file explorer. Also make sure you have administrative rights on your other accounts or you will not be able to access other users.