In an article titled "Gen O Discovers Washington's Debt Bomb" at Real Clear Markets, there is a reference to an app called "Debt Bomb" has been created to allow calculations of taxes based on the true cost of the federal government's expenditures. The app also includes being able to e-mail or "tweet" the President or your legislators. This sounds like an app worth investigating.
The app web site:
Folks who have modern gadgets might like this.