I have just created a shortcut on my right-click menu to enable me to have 'Send to my Dropbox' as an option on Windows. It is a nice easy tip which most of you may already know but I thought I would share it in case you don't. So here it is:
Go to run and enter the following: %APPDATA%/Microsoft/Windows/SendTo
Then simply copy a link in to here for your Dropbox folder.
Now when you right-click a file or folder you have the option of 'Send to my Dropbox'.
This will also work for Google Drive, or whatever syncing storage service you use.