anti-feature request: yeah definitely never give us numbers for likes etc.
feature request: being able to see whether just the specific person you @'ed liked something would be nice. one of the better features of modern online comms is the ability to noncommittally acknowledge a message. "volunteer read receipts" if you will
likes on twitter create a world in which anyone who walks through the cubicle farm at the office while your email is open on peoples screen pops read receipts. people walking by outside connect line of sight through a window to a monitor 50 feet away and you get a notification "Stacy just saw this email"
