In the depths of email overload desperation, I wished email had a 140-character limit like Twitter updates. In response, two people recommended doing what Kevin Rose does: Set your email signature to “Sent from my mobile phone.” It’s a white lie that makes you look less rude for being short. It’s annoying to have to fib (and embarrassing if you get caught somehow-of course all of Kevin’s friends now know his “secret”). But for someone who gets more than 100 messages per day, this technique may be a matter of survival versus just saving time. Haven’t set this up myself yet, but if I wind up at the bottom of another email mountain getting ready for a processing marathon, I just might.