Potential novel idea for 2007

I'm still contemplating whether to participate in NaNoWriMo this year, since I'll have my first and last extended vacation without employment of any kind since the age of 14. I'll have to decide soon, since we are already halfway through October.

Meanwhile, even as I have yet to come to a firm decision, I have been mulling over various ideas for a story this year. I have been fiddling with the idea of telling the story of the highs and lows of a internet boom era start-up, from the perspective of a fresh college grad. :D

Today, I am considering going in a completely different direction. What if I were to weave stories from the secrets submitted to PostSecret? Each major character has one or more secrets they hold. Some of these secrets involve the other characters. Each secret provides an internal motivation and a path for the character to walk within the story.

It could be an interesting exercise. I don't know if I'd want to start with a complete outline of how the secrets & lives would intertwine, or if I'd start with the characters and set the loose on the page to interact with each other and create the story as I go. I certainly enjoy the latter process better, but I know that I need to practice the craft of plotting, so it's something I need to think about.