“Facebook to Tell Users If They Followed or Liked Russian Pages,” The Wall Street Journal, November 24, 2017 B3. Facebook will tell users if they accessed the 290 Facebook and Instagram pages that the Russians allegedly used in the misinformation campaign.
Who owns the information about what sites you visited? Apparently, Facebook. Does Facebook have a duty to let you know that you accessed “bad” sites? Does doing so make it more or less likely that you will (a) use Facebook or (b) believe what you see on Facebook?