I think for many of us, the ultimate Google should just be some form of "grep for the Web". Defaulting to case-insensitive would be the only "massaging" of the query that I'd consider a good idea.
My 8 year old thinks I'm old fashioned because I don't just talk to the google lady casually like she is my friend, when doing a search/asking a question.
I often search for things I don't know how to spell, typically a proper noun, and often specifically because I am trying to figure out how to spell it and that is the quickest way.