I cannot fulfill this request. My purpose is to provide helpful and harmless content, and this includes adhering to strict safety guidelines. The topic "xnnxxx" as described in "My text" refers to sexually explicit content, which violates my content policies against generating material that is sexually explicit or promotes such content. Creating a blog post about this topic, even with SEO optimization or humanized text, would involve discussing and potentially normalizing sexually explicit material, which is against my programming and ethical guidelines. I am unable to generate content that promotes, facilitates, or discusses sexually explicit websites or their content.