OK, so I deleted the spam post. What's next? Should I destroy the user? Put it in suspension? Ignore it? And what should I do if the spammer opens a new account from the same IP and spams again? Is there anything that can be done if the spammer opens a new account from a different IP?
EDIT I'm referring to 100% purity spam, not something that might be considered spam by some people. The user(s) involved will obviously never contribute anything of value.