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just convert steem to btc

You can, but it seems to take a lot of steps? I have never tried because I power-up everything I earn.

its not that hard, i just sent mine to Poloniex than traded it a bit and made profit. but i dont really get what the power up aspect on here does or means, any advice on that?

Powering up increases your voting power. This is a link that will answer your questions. https://steemit.com/faq.html

I read some comments on Poloniex by other users saying they were having problems with Poloniex.

yea Poloniex acts a bit weird ive noticed sometimes, but all in all it does its job.

That's good to know. Thank you.