Wikipedia

Wikipedia is a website that parodies Uncyclopedia, which parodies Decyclopedia, the website you're on right now.

History
All the way back in 1999, Jimbo Whales started Nupedia, the predecessor to Wikipedia. It was a wiki project that had a verification process (to prove that each new article was a human). It flopped and went defunct in 2003.

In 2001, Jimbo Whales decided that people needed a free encyclopedia to edit, so he started Wikipedia, which had twice as many letters before the -pedia, making it twice as good an idea and meant that it would be twice as successful. In 2002, someone made a porn article, but as the admins couldn't delete articles at the time, it stayed. Now Wikipedia has a lot of porn.

In 2008, Google started their own wiki project, which was called Knol, but first, it had to get rid of Wikipedia. Thus...

Wikipedia Zero
In 2013, Wikipedia Zero was born! It was a secret project by Google to get rid of Wikipedia by blanking its pages, one page at a time. However, the content was almost always immediately restored. In 2018, the US government found out and fined Google $1,000,000,000,000,000,000,000,000,000,000,000,000. To pay off this debt, in 2020 Google announced that it would kill Classic Sites.

Content
It is very content with itself. After all, it is the largest MediaWiki wiki.