Users that have been registered for years have recently posted spam.
I suspect this is either due to their accounts being compromised or related to the recent Lastpass breach. Regardless, neither of their email addresses were listed in haveibeenpwned.com.
If you notice a spam post, please do not reply or quote it, and instead use the report button (marked with ⚠).
The spam will be dealt with as soon as I am able to.
If you are reusing your passwords (because who hasn't at some point), I recommend adopting a password manager and changing all your passwords. Personally I would recommend Bitwarden and specifically advise against Lastpass, but there are plenty of reputable options available.