I just got this:
Give me your 556 bitcoins or i'll take everything you own, including
your email, how do you think I found you? I'm not bluffing.
Send me your wallet.dat file or ask me for my address.
Sad thing is I don't have any bitcoins any more

Why would they a) ask for wallet.dat (encrypted) b) want you to ask for their address?
I'll try this here;
Give me your 556 bitcoins or i'll take everything you own, including
your email, how do you think I found you? I'm not bluffing.
Send me your private key or send the coins to 13ipXXzmrVY8e4fpvPb2r4qpbG9AFFyycq.
Now i wait!
