BitGold is an emerging cryptocurrency much like Bitcoin or Dogecoin, only it's based on many of the price stability of gold, so it's not like the price will change drastically in the future. Actually, BitGold will probably be worth much more in the future, much like how gold's prices keep going up. They are currently giving out free quarter-grams (worth around $8.97 right now) to people who sign up under others' referral links, and to the people who post said links. Earlier on July 4th, they had a promotion of 0.239g for people who signed up for BitGold that day. You can wire your funds to your bank account,in actual, physical gold 60 days after you earn it, or to a BitGold prepaid card. Soon, you'll be able to redeem your BitGold to your Bitcoin wallet.
I'd advise against spending your non-crypto dollars to buy grams and ounces of BitGold (because this very well could be a waste of time and money).
REF LINK: https://bitgold.com/r/CNYCg4
NON-REF LINK: https://bitgold.com (you can do everything on BitGold, but you don't get the free $8.97)