Trying to "multiply" about $100 through PrimeDice. Big, big mistake. I'm just happy I didn't lose it all (lost about $30), but I was one step away from it. Never play gambling for easy cash! This happened about one year ago though. Another bad decision I regret is when I bought some games off Xbox. The BTC price was $250 and a few weeks later it went up to $600 if I remember....
Well why you regret when you have bought the xbox games for small value of bitcoin? And I guess that is a good one of investments, you can sell it again for the same amount of bitcoin valuing higher because the price is already $600. I don't get it why you are regretting buying that at low price or else my understanding is not at all.