This tool is one of those rare instant classics that became indispensable the moment I started using it, to the point it is now the first piece of software I install in a new Mac. It is what iDisk should have been, and more: fast, reliable, simple, easy.

I use Dropbox daily for both personal and professional activities. As a personal repository, it hosts my 1Password keychain and OmniFocus databases, thus ensuring those important files are always (and automatically) in sync across my computers. That, of course, in addition to being used as a buffer storage area to transfer files between computers.

As a professional tool, Dropbox efficiently hosts shared project folders among team members, and is also used as an internal "clipboard" repository for our IM-based work sessions. Dropbox is also used to send large files via email, to customers or project members.

The only drawback I see at this point is the inability for Dropbox to replicate Mac-specific filesystem features such as resource forks, extended attributes and other types of file metadata. This is understandable considering Dropbox is also compatible with Windows computers, but I would happily give up Windows compatibility (which I don't need) in exchange for a more accurate file replication among Mac computers. I hear Dropbox 0.8 will support HFS metadata, that would be the icing on the cake of a truly fantastic product.

I had the exact same behaviour: just an icon in the Dock, no UI whatsoever. Did somebody manage to successfully run this on Snow Leopard?