Intercom's blog writing team has established a set of guiding principles to inform their content, which they believe will help readers produce high-quality articles. The key points include speaking with authority, being themselves, clarity and concision, presenting ideas visually, focusing on quality over quantity, writing intriguing headings and headlines, paying attention to punctuation, and engaging with readers. By following these guidelines, writers can create content that resonates with their audience and achieves their goals. It's recommended that companies with multiple writers adopt a similar set of principles to ensure consistency in tone and style across all content.