Linden Lab are loving Facebook because they are have a dream where all users "out" themself in rl and begin to click "like" many times. Like the profiles, like store listing, like classified, like everything!
You will "like" the bukkake group in sl client and it will reflect in rl Facebook profile and you will share your sl with your friend, family, and collegues
They are believing the Zucker mantra that "privacy is dead" and desire to merge sl into rl.