I do like the part about administrators removing questionable anonymous posts, although we all know that doesn't stop someone. Many of us have been moderators, and spent hours deleting posts from some idiot who is bored and just trying to be annoying.
Being able to comment anonymously is important in some cases, for safety issues, etc. And I have no problem if what is said anonymously, is said intelligently, rationally, and makes a valid point. Though if someone IS intelligent, rational, and making a valid point, they generally use their real name to take the credit.