Why a Google OS wouldn't work...
Sure, your files would all be indexed and cross-referenced, but do you really want to have a bunch of pigeons hooked up to a Beowulf cluster just so you could find your home directory? (search "PigeonRank" on google)
And what happens when your country decides to censor Google?(this happened, once, somewhere) How are you going to access your OS?
And talk about being redirected to far-away call centers--what if your support was on the moon?(Google announced their new moon-base a few months ago) Talk about delays.
So don't bug Google-just use 'find -name'. Really, do you want to just feel "Lucky" about a mission-critical file?