Since the question of "why" and "how" is coming up again, here's a quick summary I posted on reddit: From a few different analysis on HN and elsewhere... Baidu has an analytics product and an ads product, much like Google Analytics and Google AdSense, which are used on all kinds of websites via Javascript. China has set the Great Firewall of China to modify some of Baidu's assets so that any non-Chinese IP gets a mod…
If I'm a start-up, or any "hot" website, do I have anything to gain by allowing myself to be reached by computers inside China's IP space? Same for Russia, North Korea? All 3 are known to be the source of many disruptive attacks, neither of the 3 are important markets, with the exception of China, where they've decided to re-implement all non-Chinese internet services anyway.
I'm honestly curious. I'm in the process of launching a project of my own and wonder if there's any reason to not attempt to blacklist China/Russia en masse?