McMohan - 4:50 am on Jun 9, 2007 (gmt 0) [edited by: McMohan at 4:57 am (utc) on June 9, 2007]
Robert, I have always seen the operators being case sensitive. Only the search terms are not.
Like a search for "KW1 OR KW2" which searches for either of the keywords and thus OR is an operator, whereas "KW1 or KW2" takes "or" as a search word, not an operator.
I think it is pretty logical on Google's part, since it needs to be told when you intend to use a word as an operator and when not. I would have been surprised had the operators not been case sensitive.
[edited by: McMohan at 4:57 am (utc) on June 9, 2007]