They essentially made the internet unusable for Tor users. If you either got lucky or sat there for 5 minutes (that's 300 seconds), you could make it onto a website. See https://news.ycombinator.com/item?id=34181351
Right now it's broken again, they just give you a captcha that breaks 90% of the time and fucktarded propaganda points that don't even make any sense to anyone over 30, like "in 2003, botnets were 1000-5000 computers now they are millions".
How so? The outcomes could be different depending on how different the statistical success rates are