Seems like a decent file dead-drop. I wouldn’t count on the privacy or anonymity of it, but it could be something you can work with, if you take appropriate steps to protect yourself. Might have to play with this a bit later.
If you listened to the webcast I linked yesterday, you heard Ed Skoudis talking about all the security tools that are integrating Lua scripting. Here’s a good starting point if you’re moving from other scripting languages to Lua.