Like most, I disagree that having multiple identities are coming to an end. But I think it is a good thing that Facebook comments are being used on other sites because it will promote integrity. Not every site will use Facebook comments so when we want to dawn a different, anonymous personality, we can close the Techcrunch tab and open a different site that allows anonymous comments. Each site will have its own environment and purpose. I think it is a good thing that we are moving from an almost completely anonymous Internet to an Internet that allows you to be anonymous or not depending on the situation.