I second this.

While it’s still amazing which videos I can still find from 2005 or 2006, there’s not a week that goes by where I’m not kicking myself for not being quicker to the trigger to download something.

This!

My del.icio.us bookmarks go back to 2003. The web of course hasn't gone anywhere, but a significant percentage of those links are either gone or no longer reachable at their original address.