== NOTE ==
This guide assumes that you only want one integrated Minecraft save directory. If you wish to have separate directories (e.g., for other machines: Minecraft/Linux, Minecraft/Windows, Minecraft/Toaster, etc.), then you should create them on Dropbox and change the instructions here as needed. This guide also will only sync your saved game files, not any .jar customizations (such as mods) or texture packs. If you don't know what those are, then you're probably safe.
== Download and Install Dropbox ==