Too Little Information. The reason why most Facebook and Twitter updates are useless. People forget to provide context for their messages. Next time someone sends the ubiquitous status update: "This is soooooo much fun!" Response: TLI. See undershare.
Girl 1: Jill sent the most random text message to me last night; it just said, "wish you were here."
Girl 2: Where was she?!
Girl 1: I have no idea! TLI!