I'd like to put out a 5 BTC bounty for whomever can reveal the person behind premiumBTC@gmail.com--they gave me a lovely welcome to the btc world---and I'd love to thank them for it in as public a way as possible...
The fact that he uses a GMail account should have been your first clue.If the person who use gmail its first clue for scammer
can you ensured the person who using aol,hotmail,yahoomail,etc can be trusted 
Lol