One wonders why they don't, instead of showing down, display a 15s interstitial unskippable YouTube-style ad prior to redirecting.
That way they'll make money, and they can fund the service not having to shut down, and there isn't any linkrot.
That way they'll make money, and they can fund the service not having to shut down, and there isn't any linkrot.
Given those options, an ad seems like a trivial annoyance to anyone who very much needs a very old link to work. Anyone who still has the ability to update their pages can always update their links.