I am the Kat that Walks By Itself

I thought that Dropbox actually synced directories between machines, so that while the data goes up to Dropbox, it then comes down to each of your synced machines (phones, PCs etc.) so it's not just a remote drive storing the data, so if Dropbox dropped off the face of the planet, none of my data would be lost ... am I wrong? Am I getting confused with some other product?

"Dropbox is a free service that lets you bring all your photos, docs, and videos anywhere. This means that any file you save to your Dropbox will automatically save to all your computers, phones and even the Dropbox website."

I do like that you can specify folders that are synced to *other people's* computers ... so you can share files with another author by dropping them onto his computer, or photos with your family by dropping them into the shared folder which syncs them onto their machines ... or even just set up an account on a remote machine for offsite backup.