Have any of you made money buying and selling bitcoins?

So bitcoins keep going up and down in price.  I looked up bitcoins after a friend told me about how they are usually really cheap, but recently shot to over $200 due to bank accounts getting frozen in Europe.  Now they are down to $135, but they are so expensive that I'm not going to buy them for a while.

I bought Gold for most of my Bitcoins when the value was 210. When bitcoins crashed, Gold Spiked!