huh? If cell phones didn't exist, you would make an arrangement to go meet someone at a certain time and place, and if you both didn't show up, OH WELL. "stood up".
That doesn't diminish from the value and buy-in of cell phones and is a bizarre argument to make regarding the value, if any, of twitter.
I don't really get this analogy. Cell phones are a qualitative improvement in that situation. How is sending a DM an improvement over sending an email?
