Tonido (www.tonido.com) is a personal cloud service, that spans multiple mobile platforms. It was released back in 2012 for Windows Phone 7. Better late than never, a Windows Phone 8 version of Tonido has been released and shows a bit of promise.
What is Tonido you ask? Tonido is a Windows Phone 8 app that allows you to remotely access your entire collection of documents, photos, music and videos that are stored on your home computer. With Tonido you can stream music and videos, download files for offline use, and upload photo and videos captured from your Windows Phone to your PC. It's not just a cloud, but rather your 'personal cloud', where storage and your privacy are not an issue.