I've been using Dropbox for a while now and I'm really enjoying it but it wasn't until yesterday that I found out that you can sync folders that don't live inside the My Dropbox folder. This is a huge advantage if you already have a structure in place and don't want to change it.  

I find this useful if you have a folder, for example Important Docs under C:\Users\Alex\My Documents\Important Docs, I don't have to create a batch to copy these files onto the Dropbox folder for it to be backed up. I can work on my usual My Document folder and the Dropbox has an exact copy at all times and is synching all the time.

To do this in Vista and Win 7 all you have to do is something like this on a command prompt:

mklink /D "C:\My Dropbox\Important Documents" "C:\Users\Alex\My Documents\Important Docs"

NOTE: The first path is the Link Folder you'd like to create and the second one is the Target folder where it'll be linked to. You'll need the quotes in the path if there's any space such as C:\My Dropbox\Test won't work you need "C:\My Dropbox\Test"

Happy Backups everyone!