"Hacked" emails making accounts...
Hacked is in scare-quotes for a reason, so if you're checking this site for the first time because you think your email was hacked and it made an account listen (read) up. You were probably NOT hacked. All the bot network needed was your email address, NOT your password, to make the unwanted account. That's it. And how did they GET that? Well, you either went somewhere you shouldn't have, you signed up on a shifty website and they gave it/sold it/ had their database compromised, or you have your full email address listed somewhere publicly without protections ( you should start typing "dot com" instead of ".com").
And because of that, the bots that have it are using your email address to sign up for things on Drupal sites among others (a lot of the spam is for medicine, bootleg fashion or comments saying "good blog post nice information good article"). It's using your email address- they don't have your email password, I certainly don't have your email password, so you weren't hacked- they just used your email as an impersonation to attack my site with spam. Despite security measures, they get around it. You don't have to write to me asking me to remove you from the registry- I can tell the difference between hundreds of spams and the small handful of people who are here because they actually care about my hard work, and if I didn't delete it already, I'll get it the next time I purge the registry of hundreds of fake accounts. Yes, I find the fact that it's signing up complete strangers for my site incredibly frustrating, disheartening, enraging, embarrassing... but please don't blame me for it.
I've now changed the "welcome" email to include a line about accounts made in error because I've been getting an increasing amount of emails demanding I remove their account, as well as spam accounts getting through to make comments circumventing approval. I'm loathe to employ a captcha- I HATE captcha, and it discourages the steadily dwindling amount of interested readers from saying anything. When I can afford it though I may look into something similar to what Top Webcomics does for their anonymous voter page... maybe something like that would slow down the fake accounts and be less aggravating for users.