For more proof only send a little bit of Btc and then I'll double that and return it and people will vouch for me being legit.
Wallet address - 1739arBiAci9xChEDVWAdxXbMckAyANVbb
Might work as a ponzi scheme actually. He might honestly return some BTC to the first guy, hoping he will vouch for him, and then scam on the next round.
p.s. please don't go and send him the money!
Edit:
https://bitcointalk.org/index.php?topic=210427.0 What's the criteria to get banned here forever? Why isn't the OP banned yet?