"In notifications we limit the amount of information, because we want people to come onto the site."

[(1) Stretching Out Value (AKA Spence distortion)]: "Stretching value could occur in Facebook products in a few ways." 1. "In notifications we limit the amount of information, because we want people to come onto the site. Our notifications have moved towards an uninformative model — we now give notifications like 'someone commented on your post,' without telling you who, or giving the text of the comment. We discovered with experiments that this increases engagement, though it very likely harms user-value."