An inherently incomplete list of accounts that are very obviously fake, spammers, follow farming, content theft, etc. Rather than just blocking them outright, I add them here so you can benefit as well. Did I make a mistake? Email [firstname] dot [lastname] @ gmail dot com for removal.

Users or bots who have friended me with no original content (even one picture) or have scraped images off other accounts/social media.

Accounts that follow more than 5k accounts. There is no implication that these accounts themselves are not run by humans, simply that they follow a large number of accounts.