They never lose their value. I’m stuck to be stable. When you create popular content, 50% of your salary will be in Steem Dollars.
And you will also be rewarded for serving the next Steem. It’s not as much for participating in a Steem Power. Interest for 10% interest.
When you earn Steem Dollars for creating content, you have three possibilities:
1) You can convert the Dollars into Steem and sell them immediately on the open market with real money, essentially by cashing.
2) You can keep the Steem Dollars, which relate to money on the net and pay you 10% interest. You can sell them at any time. If you think that the value will increase and you want to sell a certain point in the near future, this is your best option.
3) You can exchange your Dollar Steem with Steem Power. If you want to invest in the future of the series and collect the biggest prizes, this is the way to do it.