The number of freeloaders may not be planned, but the blogging is most definitely planned. Nobody is being forced to write a blog post.
The authors have the option to ignore the freeloaders. Most software publishers do, or there would be little room in industry publications for anything else. This genre of complaint goes all the way back to Bill Gates in 1976:
http://en.wikipedia.org/wiki/Open_Letter_to_Hobbyists
Perhaps it's better to focus on something else (as Bill Gates eventually did) rather than tilting at a thirty-five-year-old windmill. Unless, of course, windmill-tilting looks like a useful news hook.