Seth Godin's blog features an "Ask an AI Trained on Seth's Writing" tool, which provides users with AI-generated responses to their queries based on Seth's writing style and content. This tool is particularly helpful for individuals seeking information on topics related to marketing, tribes, and respect. Users can access the tool by clicking on the "Ask" button on the blog's homepage and submitting their question using a text box. The AI processes the query and generates a response, which users can rate with thumbs up or down symbols and provide additional feedback.