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by powering up you lock up your funds for as long as you want while you gain % interest (more steem) on your steempower. At some point in the future when you want to power down, it will take about two years to empty your steempower. If Steem is flat or worth more in the future, you make profit by powering up.

Powering up does not ensure that you will automatically profit. This is contingent on what the price of Steem will be over a given time period as well as your actions as a curator.

Powering up (in other words converting Steem to Steem Power) allows one

a) to increase their voting power and claim curation rewards
b) to protect themselves from dilution (up to 90% compared to the running inflation rate)

You'll be rewarded(profit) once you power up. Powering up, means showing your long term commitment to the Steemit platform, your trust and belief. Powering up ensures the long term health and stability of the Steemit platform. And for helping and having that much support and faith, you get rewarded(profit).

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