It is not only useful but presented in a way where most if not all the angles are approached. You provide people with a link to download the service pack and also a link to the microsoft recommendations on what how and when to do it. Which in tuen helped me clear up a problem i had that would have prevented me from receiveing this important update. I had no clue that an error while installing an update i did not need was preventing me from receiving SP1. with that fixed i am not about to install it and see how it goes