Ask HN: Did Google protest by crawling (a lot less) yesterday?

One of our sites is routinely crawled by Google (Bot) at an average of 300k+ pages daily.

Within the last 24 hours, it crawled less than 30k pages. (It has never crawled less than 200k pages/day in last many months.) Makes me wonder if this was a way of protesting against SOPA/PIPA?

Any others here with similar observations? Please share.