Information on avoiding scams

SFWA on Vanity and Subsidy Publishers
Preditor & Editors
Five Traits of Common Writing Scams
Expert Advice by Stacia Kane
Writer Beware®: Warnings About the Schemes, Scams, and Pitfalls That Threaten Writers
12 Self-Publishing Services Authors Should Beware

Some authors who blog about publishing

Dean Wesley Smith
Killing the Sacred Cows of Publishing
New World of Publishing
Think Like A Publisher
Writing In Public
(Scroll down to daily blog -- "Topics of the Night" often contain great insight.)

Kristine Rusch
The Business Rusch Publishing
Business Musings
Discoverability Series

Jane Friedman
Helping authors and publishers flourish in the digital age

Michael A. Stackpole

J. Steven and Christina York
Views on the changing nature of publishing

The Passive Voice
Writers, Writing, Publishing, Disruptive Innovation and the Universe

How to use (and not use) social media

Twitter for Writers: How to navigate the Twitter sphere

Social Networking Etiquette for Self-Promoting Writers

A Word on Negative Reviews
How to handle bad reviews gracefully

Authors Behaving Badly
How not to use social media