A personal cloud service lets you share photos, music and documents among all your devices easily and quickly, but the way that sharing happens depends on which cloud service you choose.
The good news is that these cloud services are normally free for a limited amount of data. Most vendors also offer premium or enterprise versions, which allow you to store more data and to share data, which is useful in a workgroup scenario, for example.
We looked at nine personal cloud services: Apple’s iCloud, Bitcasa, Box, Dropbox, Google Drive, Microsoft SkyDrive, MediaFire, SpiderOak and Ubuntu One. While iCloud, SkyDrive and Google Drive are optimized for their respective platforms, all of the cloud services work across multiple operating systems and different browser types.