Microsoft SkyDrive was given an upgrade which is a great improvement over what DropBox and Apple has to offer in the way of Cloud computing. Click Here for more information.
If you are a previous user of MS SkyDrive, you may notice that the 25GB of storage that you had before was reduced to 7GB. You will want to take advantage of their loyalty program to increase you size limit back to 25GB. Click Here for more information.