Have fun with this (aimfight.com). It uses some algorithm based on how many buddy lists you are on (and how many buddy lists those people are on) to determine your "popularity" as compared to someone else, similar to those old google fights that were floating around a while ago.
"Now that you've built up the courage to get into the gym, let me give you five reasons why you should put in the time to train with consistency: 1. Increased strength 2. Improved self-confidence 3. Injury prevention 4. Self-discipline 5. Sex (Trust me, you'll have a better shot with the ladies if you're in shape.)" -- Making the Game, pp. 14 - 15
This is a sample I used in some VBA code embedded in an Excel spreadsheet. This line checked if the cell value was blank. You could use the line in an "If-then" setup to set the .value parameter to the random number. Sheet#.Cells(X, Y).