Amazon Connect hosts author blogs, with RSS feeds. A long and growing list of participating authors is provided.
Robin Lee Hatcher
Amazon Connects also offers customer "plogs" which it defines as "a personalized web log that appears on your customer home page. Every person's Plog is different (hence the name) and just like a blog, your Plog is sorted in reverse chronological order. Each post also gives you the opportunity to provide feedback to the sender as to whether you liked the post or not. This feedback loop means your Plog becomes even more relevant and interesting over time. Your Plog will appear if you are logged into our web site and is visible only to you."
Bottom line, your Amazon "plog" collects posts from various author blogs for you on your customer page. Same thing can be done directly to your email via an RSS feed option, if you prefer.
From my surfing through the author blogs, these aren't kept current -- and most authors with an interest in blogging have their own blogs at this point.