I recall that even slashdot got slashdotted, which was itself incredible. The admins there at least had the sense to put up a static page with info about the attacks, which is where I first got some details about it after a fellow student in my theory of computation class first notified me (I think he had a pocket radio he was listening to in class).
For those too young to know, being slashdotted was a term for your website going offline due to too much traffic, named for (and primarily used on) the site slashdot.com. Slashdot was the preeminent popular tech/nerd discussion forum of the time, and being linked from a story on slashdot would often direct more attention to your server than it could handle.