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I'll have a look at poloniex. I heard about it but didn't get on to it. Do you find it good?

So far i like it. the site was offline once, hope it doesnt repeat. only thing i am worried about, is safety. i heard there are better wallet/trading options which I, dont know about yet

You cant buy bitcoins on poloniex from dollars or euros . It's an exchange platform, not a bitcoin seller !

My bad,, I was assuming he wanted to buy btc with steem, not dollars

Just let me know your country's and ill post it in a tutorial , What is your payment method and from which country are you ?

Yes indeed that's a good one i use it for trading alot indeed, Also Bittrex is a nice trading platform is could suggest. <3