ExtZy is a prediction market game created by Z/Yen, which makes a market out of web-pages. Players can buy shares in those sites that they think will grow in popularity, and then trade their dividends in for real prizes.

A ExtZy year 2017 review, written by Morgan Rose. To read more: http://www.extzy.net/community/newsarchive/155-extzy-2017-the-world-in-review-2