Today I am thinking about the possibilities we have for putting out newsletters.

1. Postal mail
2. e-mail
3. Blogs

Like most scenarios there may not be a perfect solution.

Postal Mail

1. Can take too long to get your message out
2. Can be expensive

E-mail

1. Email is fast 
2. Unwanted email is a major problem -unsubscribe features need to be in place
3. Instead of unsubscribing properly users might mark your mail as spam
4. If a person is added to an email list by someone even with good intentions your email could become unusable because you could be labeled a person that puts out spam.

 Blogs

1. Allow for users to add comments
2. If you RSS syndicate your blogs you can be notified as new blogs are added using various ways.

• E-mail
• Desktop Notification (with widgets or gadgets)
• Homepage bookmarks
• Homepage  feeds

When the user is allowed to choose their method of notification it becomes a win win situation for both your users and you as a website owner.

Blogs... used as a tool for newsletters -  Hummmmm Interesting thought.  We are currently testing the concept.