The feedback feature of conspicuously showing who's seen a photo is interesting. It prevents people from lurking -- you're always visible to the people who's c

The feedback feature of conspicuously showing who's seen a photo is interesting. It prevents people from lurking -- you're always visible to the people who's content you're seeing. This seems, IMO, more interesting than the 50 friends limit. I wonder if it will make people think twice about opening a photo, knowing that that action will be logged publicly and conspicuously. I also wonder if it'll come with an on-off switch analogous to facebook and linkedin's profile views feedback.