I find it really irritating for query refinement. Often I will do a broad search and notice a new term in the result snippets that I want to use in my search. W

I find it really irritating for query refinement. Often I will do a broad search and notice a new term in the result snippets that I want to use in my search. When the term is a name or some other hard to spell word (or phrase), I like to be able to type it in the search box while I'm looking at it in the results. Instant ruins that for me, so I always turn it off.