I’ve seen that you can share links to the files, but they’re just another copy.
They would have to download the file and re-upload it, which is as easy as dragging and dropping (similar to emailing an attachment but there’s still only one copy).
But there’s also MS Office integration, where you can open a file directly on DropBox from the Word ‘open file’ dialog. Then it’ll get saved directly back to DropBox when you save.
Clicky
Thanks for finding that.
From what I can tell DropBox is identical to Box that we use at work, so I’ve already been through all these options 🙂
There’s also the folder sync option where you have a local copy of DropBox on your hard drive and any changes in there sync to the server. More info here.