Check this. Our newest application, the Breathalyzer is up and running here:

http://sizzup.com/blogs/?page_id=174

What is it you ask?

Basically you tell it what you drank, how much you drank, and how long you were drinking for and, based on your height, weight, age & sex and it will tell you your blood alcohol content (BAC)... How cool right?

Thoughts welcome!