Stay on top of the best stories in the bitcoin, blockchain and cryptocurrency industry. Subscribe to our newsletter here.This week's tories contributed by Jeremy Epstein, Nick Marinoff and Amy CastorTwitter Abruptly Bans Cryptocurrency Ads — Beginning TodayLess than two weeks ago, the social media giant announced it was developing new policies which would lead to the eventual ban of cryptocurrency and ICO-related advertisements on its platform. That ban suddenly took effect on March 27. “We are committed to ensuring the safety of the Twitter community,” said a company representative. “As such, we have added a new policy for Twitter Ads related to cryptocurrency. Under this new policy, the advertisement of Initial Coin Offerings (ICOs) and token sales will be prohibited globally.”Cryptocurrency Interest: Is It on the Decline, and Could It Spike Again?Following a three-month period of drooping prices, it appears interest in bitcoin and digital currencies is falling to new lows, and the market value is sinking along with it. In addition, interest in bitcoin and cryptocurrency related jobs is generally on the decline, though blockchain gigs remain stable enough. Some regions, like India, on the other hand, are seeing job growth.What we’re probably witnessing is a “shift” in interest, not necessarily a lack of regard for cryptocurrencies; instead, interest may be adapting as people learn more. Analysts are still predicting that overall interest in crypto could spike again later this year. Many remain bullish on virtual assets, particularly bitcoin, and suggest it could reach new price highs by the summer of 2018.Cryptocurrency Exchange Bitfinex Plans Move to SwitzerlandBitfinex, the fifth-largest cryptocurrency exchange by 24-hour trading volume, is looking to hoist itself out of Hong Kong and settle in Switzerland. As confirmed by sources close to Bitfinex, the exchange is already in talks with Swiss authorities.Jean-Louis van der Velde, CEO at Bitfinex, hints that a move to Switzerland would bring a renewed transparency to the business. “We want to be the most transparent of all exchanges and meet the requirements of the Swiss regulator,” he said.Op Ed: Why Korea Could Be the First Cryptocurrency-Powered NationKorea has many of the pieces of the puzzle to become the first “Crypto-Powered Nation,” one that runs on blockchains and supports a crypto economy. Cryptocurrency awareness and adoption are already widespread throughout the country. The end result is that the crypto-infrastructure is in place to handle a large number of customers and almost everyone there has heard of the concept.The current government, led