There's also the problem that anyone who knows your address will be able to download your files, whereas most other services either seem to have strong access control or unguessable links.
That said, it's an interesting and novel approach.
There's a password option...and the world is large. (Although I agree that inhabited regions are far smaller, people are likely to choose their own address, and possible address data collection is a concern: even though it doesn't seem to happen here, not sure if I want to share my location with the recipient)
