Perhaps not, but it's more than enough to find out strategy, preempt potential competitive advantage, reconstruct development patterns, cherry pick staff members, and gain a huge upper hand in takeover negotiations (potentially driving down acquisition price based on unfortunate private data).

Would you write down everything you're doing, and post it to a competitor? Because if you work in an area Google's interested in then that's what you're doing, modulo a privacy policy you'll never find out they've violated (and has happened at least once before - http://articles.latimes.com/2010/sep/16/business/la-fi-googl...).