This is partially a test post so I can play with commenting options, but it's also a serious question, what do people think about the ability to require people to have a login before commenting?  Is it a sign that the author is trying to dodge questions that users may not feel comfortable leaving under their own name, or is it just one of the easiest ways to avoid comment spam?

 Let me know your thoughts (and you'll have to be non-anonymous to do so!)