there's an article at wired.com about it, and how google has caved on the purity of giving information to retain one of the top search engines. not listing slurs (the example cited in the article is that someone said something against john malkovich and got taken off the engine) and anti information, to, as the example was in this case, a site that is against scientology.
wired.com doesn't have a very critical view of this, painting it more as a responsible company ensuring their business. i'm sure it is, in a way, but it demonstrates aptly that freedom of information and speech on the net is something being continually chipped away from.