If you're a Windows user and you want all of your documents available in the cloud, you can turn a cloud storage folder into your Windows 'My Documents' folder. I did it using a subfolder inside Dropbox with the . To get started, open Windows Explorer, go to Dropbox, and create a new folder called Documents. Next, go to My Documents, right-click the folder, and select Properties.

In the My Documents Properties dialog box, select the Location tab and click the Move... button. Navigate to the Dropbox\Documents folder you just created, and click the Select Folder button. This action will return you to the properties dialog box, where you need to click Apply. A window will appear, asking whether to move all your old files to the new Documents folder (click Yes). Now, every time you save a new file, it will go to Dropbox by default.

If you save your to-do list as a plain-text file, you can then sync your list across all your devices--including your PCs, smartphones, and tablets--by using cloud storage. Just drop your Todo.txt file into your Dropbox, Google Drive, or SkyDrive storage, and you can then access it anywhere you have an Internet connection and a text editor.

You can also turn your plain-text list into an interactive smartphone app, with help from for Android and iOS.