There are a handful of people publishing online whose every word is worth reading, and Brian Clark is one of them.  He transformed Copyblogger from an excellent copywriting blog into Copyblogger Media, a multi-million dollar powerhouse of  content and tools for anyone involved in modern marketing.

Now he introduces his next project, Entreproducer, a multimedia newsletter that will ultimately become a book.  He talks a bit about his plans in this Copyblogger post, and it sounds fascinating.