If someone broke rules 5 minutes ago or 5 years ago shouldn't matter, altough I agree that reporting 5 year old spamposts doesn't make sense.
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I have seen users were punished because of a sin they have done 3+ years ago. I think it was plagiarism.
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Plagiarism is not a sin, nor a little mistake, it is simply against forum rules.
- Plagiarism: If you copy some text from somewhere, then you should have a good reason for it, and you must link to the source. Doing otherwise is plagiarism. Changing a few words around doesn't matter. If we find that you plagiarized, then you absolutely will be permanently banned, even if we find it years after you did it.