The PPC is actually kind of fun. Honestly!
The PPC (for Prediction Percentage Challenge) was originally created by swirldude during the Spring Contest of 2005. In this competition, Board 8 users attempt to guess the percent of GameFAQs users who will correctly predict the following day's matchup. (For instance "I think 95% of the site will pick Mario to beat Olimar.") swirldude passed control of the Contest to Lagoona in 2007, before being taken over by Lopen the following year. These days the PPC is being run by Carvey.
The Summer 2005 PPC was won by Yoblazer33.