Hmm, I wonder how this works. MAC addresses are OSI Layer 2, so your one wouldn't normally get passed through to Dropbox's servers. I'm guessing their client

Hmm, I wonder how this works. MAC addresses are OSI Layer 2, so your one wouldn't normally get passed through to Dropbox's servers. I'm guessing their client reads in your computer's MAC address and sends it as part of the login? I wonder if it's possible to spoof it just for their client.