Gmail Labs Introduces Mail Goggles

Google strives to make the world's information useful. Mail you send late night on the weekends may be useful but you may regret it the next morning. Solve some simple math problems and you're good to go. Otherwise, get a good night's sleep and try again in the morning. After enabling this feature, you can adjust the schedule in the "General" settings page.

Google Gmail Labs introduces Mail Goggles to prevent you from sending emails you shouldn't have sent if you are sober enough. Mail Goggles can be enabled from Labs section under Settings.

I personally feel this new beta feature is useless and utterly waste of time and resources. If one is "drunk", simply don't email.

Google Goggles prevents EUI – emails under the influence
http://www.tgdaily.com/content/view/39650/113/

New in Labs: Stop sending mail you later regret
http://gmailblog.blogspot.com/2008/10/new-in-labs-stop-sending-mail-you-later.html