They have a decent amount of post and/or comment karma but then their posts and comments aren't there, or there's just a few, like 4, and the amount of karma gained from them can't account for their total
Meaning, they're posting and deleting everything they do
No one who is legit does this
Ever.
Or they bought an account and then erased the history of the account because their speech/language/typing patterns would all of a sudden change.
true