This Page is Designed to Last | CSS-Tricks
I feel there is something beyond the technological that is the real trick to a site that lasts: you need to have some stake in the game. You don’t let your URLs die because you don’t want them to. They matter to you. You’ll tend to them if you have to. They benefit you in some way, so you’re incentivized to keep them around. That’s what makes a page last.