This isn’t meant to be a commercial for any one company, and I apologize for the onslaught of not well placed images with possibly broken WordPress plugin features which may or may not be working currently. I also just think that more services like this should exist, and that they should be open and interchangeable quite easily. P.S. Using about 332.93410 GB of Cloud Files storage, I spend about $50/month on my Jungle Disk account for storage needs in the hope that I won’t lose my precious bits in more than one place at any given time. There is probably a lot of overkill as far as how many revisions I keep, and having similar backups jobs with multiple cloud storage providers. 
You can be the judge.
I have been using Jungle Disk, on my Macbook, contained VM’s and parts of my mixed operating system network, for over a year now to synchronize and backup my data onto the Amazon S3 infrastructure, and the Rackspace Cloud Files as well.
I thought about using Dropbox previously for storing a very large amount of data for synchronization and backup purposes. I Considered that both Jungle Disk and Dropbox use the S3 for storing data into S3 buckets, and Jungle Disk supports talking to multiple “Online Drives, which are virtual drives, buckets and can even use another service like Cloud Files. Also with Jungle Disk you can configure multiple sets of S3 credentials for security. This would allow me to store my data much more efficiently depending on what I am storing for any file under 5GB in size. Also, I can configure many options including the local file cache, and number of file revisions to store for each disk independently.
Since Jungle Disk can mount any of my S3 buckets, using different credentials, and another service, I went with them.
Another cool feature of Jungle Disk is the use of encrypting your data, and then add Cloud Files for allowing you to synchronize those online drives between local machines and the cloud in a Dropbox-eqsue fashion. It also has a granular setting for bandwidth usage and sharing files between other internet users not using Jungle Disk.
Another good thing is that you can access your non-encrypted files which are stored in S3 with any program that knows how to speak with it. I really like the new S3 file manager in the AWS console.
