Probably poloniex. They seem to have some of the highest trade volumes. Have to convert from BTC though.
I use Kraken, I think Bitfinex also has it now. I like bitfinex & poloniex charting tools much better than Kraken's though. Having said that, my comment to buy is half tongue in cheek. I think ripple has a decent chance given the market cap and recent deals w/financial institutions to make it more mainstream. There's always a chance it crashes and burns two months from now. I personally have a pretty deep trailing stop-limit order just in case. As already mentioned, w/Kraken you can only buy through cash (i think) and bitcoin. There's no fungibility between it and ETH yet.
Always be mindful of your emotions and continue to trade it objectively. Ethereum and GPB/USD are fighting it out for top spot in my current portfolio.
To me, this hype and hoopla says to get on the short train in 1-2 business days, and ride it into the toilet it may plunge into. This is what they used to do on Yahoo! forums. Pump and dump. #sad.
I think bitmex might have ETH futures to short. Otherwise I think exchanges that offer margin trading one can short there. So @Overnight you have a crypto acct open to short or are you just griping like so many at ET?
84. The train is leaving the station. 100 here we come with a potential to 500. Folks, ghis type of opportunity just doesn't happen everyday. The more i study and learn about blockchain, the more it reminds me of the very early days of the internet-- I was there and now, we are here. Wiser, brighter and with more risk capital to apply on a global basis than at anytime in history. https://www.cryptocoinsnews.com/sec-comments-approve-ethereum-etf/ surf