Lost $60 In bioenergyinv.com

I pay via paypal May 17, 2010, and then I went into the account and there is no investment value listed there. I tried contacting them via e-mail, but until now May 19, 2010 there was no answer from them, also the value of my investments.
I just realized I hit a SCAM. Finally I tried to eliminate the frustration, and try investing again with a smaller value in the oil-investment.com Although I have not been paid because I'm investing $ 12 (May 18, 2010) for five days in the future, but very surprising in this day May 20, 2010 I've got 8 referrals, and I only advertise in the ad-free. This gives me the spirit to be more careful and not easily discouraged.