Just to clarify to everyone interested in this, there is no way to load illegally downloaded games, or personally made back-ups of your games through this SD adapter.
It's purpose would be to supplement homebrew games, emulators, and utilities. It would also provide writable capabilities to the above mentioned uses, for example: Capability for the development of an operating system (OS) for the DC, or allowing VMU save transfers to and from your PC.
That being said I'll be waiting, waiting, waiting...