Although his post, Are You Leaving Your Readers Out of the Conversation?, is about blogging, it's also relevant to newsletter content. He says:
When the conversation is not one that is of interest to your actual readers, however, you’ve got a problem. Here are a few of examples.
- Do the prospective customers of a Realtor want to read endless debate about Zillow and other threats to the traditional role of the real estate agent, or do they want actionable tips on buying and selling a home?
- Does a small business person care about you hashing out the vagaries of the social media press release with your industry colleagues, or might they benefit more from a few practical publicity tips that demonstrate that you are a savvy and confident PR practitioner?
- Does the average car accident victim care about the novel procedural ruling that just came out of the Federal District Court, or do they care about information that demonstrates that you’re an attorney who will take care of them and fight the insurance company?
So as I keep saying, don't "talk shop" in your newsletter. Instead help readers with information they want and need.