I really enjoyed reading this. It's clever and well done and honestly makes me like the rap genius guys more for responding in kind. As for why op is publicly

I really enjoyed reading this. It's clever and well done and honestly makes me like the rap genius guys more for responding in kind. As for why op is publicly posting a private email thread, it wouldn't be surprising for both sides to agree to post this content. Despite the slightly brutal reply at the end, rap genius doesn't come off looking bad at all.