This week’s bluffer’s guide, courtesy of yours truly, is about Facebook Beacon, the outside-website-integration idea that provoked a lot of ruckus among techies because it wasn’t as clearly opt-in as it should have been. That, in turn, prompted a petition from MoveOn.org, media coverage, “block beacon” instruction sites and, eventually, a backtrack and apology from Facebook founder Mark Zuckerberg.

Some privacy advocates are still concerned that Facebook is receiving the information even if it’s not publicizing it anymore without explicit permission.