I bring this up because it reminds me of the mini-controversy around the order of navigation buttons in a Web survey. Should it be Next and then Previous or Previous and then Next? In our case we did the research and summarized it in a white paper posted on the Mix way back in April of 2006 and soon on the company Web site. We reached pretty much the same conclusion as Nielsen: it doesn't matter. All that matters is that you are consistent. Amen.