I removed everything from my account about 6 or so years ago, and instead of deleting it just stopped logging in completely. So far not a single E-mail from them. I'm afraid to log back in even if to simply delete the account, because I don't want to "tickle the tiger" and suddenly start being treated as a user...

Same for Twitter. I signed up once a long, long time ago, and maybe tweeted once and never logged in again. Occasionally I get E-mails from them about people (bots?) who "follow" me despite my inactivity. It's likely because my twitter handle is pretty short and an actual name, so probably some people get confused and follow the wrong person.