Nearly two years ago, many technology sites brimmed with hype over a new Google technology called OpenSocial. Bloggers questioned if OpenSocial would spell the end of Facebook. Amid all the discussion, I felt that many people were ignoring several serious issues regarding how OpenSocial would handle user data, privacy, and security. A few people brought up questions on this topic, but until an actual implementation hit the market, no one seemed completely sure how OpenSocial would work in practice.
via First Impressions on Security in Google Wave | Social Hacking.