I’m not going to say much about the newest Authors United letter. Google it if you wish, and you’ll find plenty of commentary.
But I will point out that, when claiming status as highly successful writers who should be heeded when dispensing business advice, at least one of the thousand in the group should be on the lookout for typos in PR materials.
(Why, yes, I am concerned I’ll find a typo of my own the moment I hit the publish button!)