This week, Dropbox announced a new offline storage option similar to BitTorrent Syncs selective download. Specified files are synced to a connected computer while other files can be downloaded on demand right from the file system. This is the kind of stuff Dropbox should be leading with. I'd be happy to see them exit email and note-taking and focus on a better Dropbox. This is potentially a huge step forward for the service.
Their announcement video is embedded below.
By way of Twitter