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Here is a quick tutorial on how to migrate your saved games to the cloud so you can play your levels wherever you may be.
The first step is to download Dropbox. Dropbox is a nifty little tool that automatically syncs content to their servers, and allows you to access it both online and through a client on your PC. The good thing about Dropbox is that it is cross platform, plus available on the web and web-enabled smartphones. If you sign up for Dropbox with this link, you'll get 250MB extra. If you'd rather not use a referral link simply go to http://www.dropbox.com. You get 2GB for free automatically.
Once you have installed Dropbox, you'll need to know where the folder is that it will sync from. On most Windows machines, it is located inside the "My Documents" Folder.