A bit of weird one here, but thedailywtf.com. I wasn't able to find any sort of "delete my account" functionality. Not that anythings changed post-GDPR, but...
(The only reason I was reminded that I actually had an ancient account is that my password from there was apparently leaked and spammers tried to convince me that they'd gained control of something important. They couldn't connect the password to the site, obviously. It was just a leaked password database.)
(The only reason I was reminded that I actually had an ancient account is that my password from there was apparently leaked and spammers tried to convince me that they'd gained control of something important. They couldn't connect the password to the site, obviously. It was just a leaked password database.)