The analysis presented here is based on my review of existing research on privacy expectations of people who create online content. This analysis concerns the full range of user interactions on what we used to call Web 2.0 platforms, focusing on social media systems like Facebook, Twitter, Reddit, Instagram, and Amazon. User interactions include posting original content (text, photos, videos, memes, etc.), and commenting on content posted by others. Reviews on Amazon and comments on news websites count as online content in this analysis. Photos uploaded to photo-sharing sites and original videos posted to YouTube also count. Anything in any format created by an individual from their own original thought and creative energy, and subsequently posted by the individual on social media platforms, counts as online content. In most instances the online content or interaction contains or is traceable to personally identifiable information, even if this is unintended by the content creator.