I think read receipts are a terrible UI concept in some of the interfaces we have to deal with daily. Taking for example a chat (like Facebook's), if you have t

I think read receipts are a terrible UI concept in some of the interfaces we have to deal with daily. Taking for example a chat (like Facebook's), if you have to respond to someone's message but you don't really feel like responding as soon as you receive it, you'll be forced to do it as soon as you realize that the other person knows you've seen it and they might think you're pretending you haven't seen it. It's extremely annoying when you're trying to get work done and you have someone sending you a message. You want to answer, just not right now, but you can't, otherwise the other person might become upset or annoyed.