I have just set up a trial with iContact so that I can have a newsletter. It is not so that I can send what I put in the blog to subscribers in a newsletter format by email. It is just so that I can send out small snippets of time sensitive information infrequently to interested parties, direct. No wondering if you saw the information in time or not.
The other thing I will do with the newsletter is to send it out monthly to list the latest podcasts published and let you know if there are some good ones in the pipeline.
One more thing. In order to improve the podcast I will set up a couple of surveys which I can put on the site here. or send out if I feel I need to add as part of the monthly news.