In the 3rd para., where it says that a person will be more inclined to “employ norms of civil discourse” when he writes under his real name: Actually, many people who blog under a pen name are very much aware of the persona they are creating and speaking for in print. That persona may be an alter ego, an historian, a critic, a truth-teller, or a combination of some of these, but what he writes is not “off the cuff” or uncontrollable, as LC implies. As we all know, it sometimes takes hours to write a good essay and bring it up to printable standard, and I use the word “essay” instead of “blog” because that is what a well-written post is: an essay.

Para 4 lays out why bloggers go to pen name and anonymity, for cover. There is no way to know whether Tweed has a already created a blacklist of undesirable educators, but I suspect they have.
Teachers with long careers of full S ratings have been harassed, excessed and barred from interviews. We can assume some of this obvious push-out is the result of explicit or not so explicit age/salary directives coming from Tweed, but blacklists are also a very real possibility in Klein’s version of what constitutes “fair” labor practices.