Whether you blog (about any subject), use emails for marketing, send out email newsletters or just have your own website you’ll find a treasure trove of good ideas from Susanna Opper through her own email newsletters. See past issues here. After you’ve read them, sign up to get her new issues here.
You can also hear an interview with Susanna here.
Either way, you’re going to learn a lot about how to write your marketing emails and web sites (including your blog) much more effectively.