http://3oamv2de6ooacy72hv3ulym3i3vvlprlkqas7hhzo4pu5nyxnji37zad.onion/blogs/censorship-circumvention
The reason for needing outdated information is that, the website admin can change the information to comply with the censorship laws and regulations, so it is a must to have a way of going back in time and reading it. Anonymizing routers like tor helps to avoid detection to a certain level, as long as you stay within the tor network and do not identify yourself, you should be able to access the information.