Wow, I have lost about 150 UV a day but not half. Sorry to hear that.
I just shut instant off. I wonder how many others do the same thing? Actually it bugs the heck out of me when I am wanting to type a search.
I wonder how many others do the same as me?
My only Helpful comment is this! As you type your search words google is giving you the string most searched for. Best thing to do is make your titles and keywords match that string.