I just found out that later this week Aweber (the newsletter delivery service that I use) is adding a new feature that will allow their publishers to automatically send an update to their Twitter account when they send a new broadcast/newsletter. The tweet will link to an online version of the newsletter so that your twitter followers will get to see what you’re sending out to newsletter subscribers.
This new option will appear in the ‘Syndicate’ section of the admin area of sending out new newsletters.
It’s a cool little feature that should help publishers extend their newsletter reach.