Skydrive is the cloud storage service Microsoft has in line with Google’s Google Drive.

OneDrive
OneDrive

However Skydrive will now be known as Onedrive. Apparently their change of name is due to a trademark issue with a British broadcasting company, BSkyB.

I haven’t really used Skydrive, now Onedrive but I think it’s a good alternative for your files if you’re looking into getting “extra” cloud storage services.