Have you ever gotten home one night after doing a bit of drinking and fired off an e-mail that, the next morning, you totally regretted sending? Apparently, the guys at Google have and have developed a Gmail application to stop these drunken missives. When active, the feature, which is set up to come on during the weekend, will ask you a series of math problems before it lets you send the message. This is a great idea from Google -- now if they only had an application that stopped you from wasting time watching terrible reality TV.