SNB abandons Swiss Franc Exchange Rate Ceiling

Updates:
http://www.washingtonpost.com/blogs/wonkblog/wp/2015/01/15/why-switzerlands-currency-is-going-historically-crazy/

http://www.businessweek.com/articles/2015-01-15/heres-what-the-swiss-central-bank-just-did-and-why-its-such-a-shocker
http://www.bloomberg.com/news/2015-01-15/polish-banks-zloty-slump-as-swiss-franc-mortgages-get-expensive.html