Whitney Houston 's accidental drowning death was Google 's top search trend , generated more than 10 million tweets and was the third-biggest event on Facebook in 2012 . Facebook , Twitter and Google all just released their year-in-review reports . Top trends : Superstorm Sandy , Whitney Houston . Comment:
Facebook , Twitter and Google all just released their year-in-review reports . Top trends : Superstorm Sandy , Whitney Houston . Comment: