The one thing that Dropbox fails on, together with just about every other version control system, is that novice users (or your business-type cofounders), easily create conflicts with Word, Excel and other files. There's no easy way to handle it, but the current way is very annoying at best. Most of the time I guess it, and delete the one I think is wrong, but one day that will lead to the loss of some important changes. It's hard to merge every type of document, but atleast give me the best info, or a list of conflicts: who created it, when the versions were each last edited, file sizes, etc. Often a user will edit an old copy of the file and wreak havoc. Finally, dropbox syncs _everytime_ I view an Office document. Must be Word's fault, but it's annoying.