My favorite blogs discuss more than one topic.
They are a mix of encouragement, technology tips and insights, leadership and a strong leaning towards empowered thinking. Mitch Joel, Seth Godin and Michael Hyatt are three examples that come to mind. They write about a variety of topics because they are passionate about a variety of topics. It’s never good when you try to hold back your passions. When you hold your passions inside they’re tear you up from the inside out trying to escape. Your God given passions belong in the world and when you try to keep them inside they get pissed. They haunt you by causing internal turmoil.