Please sign this message "7DayPonzi[dot]com" with your address
7DayPonzi - 1QLG62s3BUSHH76EMnVbjSLcDeENA71uAj
He meant you should sign with your wallet in bitcoin-qt or electrum.
I did sign the message in my wallet. I posted that to indicate that it was complete.
Take a look at this link for signing btc addresses
https://bitcointalk.org/index.php?topic=223713.0We can't verify your btc address if you don't post the message, BTC address and signature...
Edit: Also, please post in topic
https://bitcointalk.org/index.php?topic=972192.0 to verify that you are really holding btc for that site.