This is HUGE news, Poloniex being the largest altcoin exchange in terms of volume have just added Steemit, this will push Steemit to a much wider audience as there are a large group of traders who will only indulge in alts through Poloniex, the large volume on Bittrex (a competitor exchange) has caught Poloniex's eye and they want a piece of the Steemit pie, this should propel Steemit and push our users to an all time high and benefit our community, happy trading guys!