Second, this sets pretty bad precedent. Asking one of these companies to reveal the algorithms they’re using is tantamount to theft. Why should they hand over their golden goose just because a lot of people want it? What’s to stop the same government to take the technology of a smaller company by force later?
If people are interested in protecting the data Google displays, I think a better solution would be to go after who is leaking the information in the first place (e.g. if Google can crawl HIPAA info from another site, that’s the other site’s fault). If consumers willingly hand over their data to Google, on the other hand, that’s on them.