I mean, sometimes content is intentional. Look at the [revision history][1] on this:

http://serverfault.com/questions/443134/centos-6-3-install-reiserfs-support/443137#443137

The question was from 2012. The content within was deliberate, and this was the accepted answer. What motivation would someone have to edit 4 years after the fact, have the content rolled-back by the author, then make the same edit again.

It's disrespectful.


  [1]: http://serverfault.com/posts/443137/revisions