Rating the Livebloggers talks about three of the blogs that were covering Steve Jobs keynote where he announced the Macbook Air. The one with the highest rating, Gizmodo’s Live site, is hosted on WordPress.com as a VIP, which is how they managed to avoid the problems that hit Crunchgear, Engadget, Twitter, et al. Here’s a Flickr picture showing how spiky the traffic can be. (That’s from the iPhone keynote, not the latest one.)