Flyertalk, the administrator, indicated that the model for the reputation comments is ebay. However, on ebay, you can't make anonymous feedback remarks - you have to leave your name, unlike here.
While some people have manually left their names in my FT feedback, it is, of course, entirely up to the feedback giver whether to type in their names. Not sure if anonymity with regard to FT feedback is the way to go. Maybe time will tell?
Say someone feels like flaming you for something you write. Couldn't they simply search for as many posts as possible, dinging you as much as they want until they are satisfied that you have paid a fair price for your "acting up"?