Even now, you'll see people post an article here from five or six years ago. It might have 100 comments on it. Five or Six commenters might already be dead -- including the article's author.
Now multiply that by 50. Most of the net will end up being written by dead people.
I blogged about this a while back -- http://www.whattofix.com/blog/archives/2008/09/the_dead_spea...