Mine is not as old as yours, but a few years old (1689 days), and yet it feels like one of my newest accounts, something I've only started using recently. Maybe I don't pick up accounts as easily as I used to. Older still-active ones include, at least: Slashdot, Wikipedia, Musicbrainz, OpenStreetMap, Yahoo, Gmail, an IRC nick, Paypal, eBay, Amazon, AIM, and a webhosting account. HN feels like the new addition that I'm still sorting out, despite it being years now.