Oh, I know mood charting is valuable. I use Mood Tracker every day. The part of this post that came closest to serious (I thought it was sort of funny) was for the people who have a tough time knowing when they're sliding into a depression or just sad; swinging into mania or just elated over something. I was fantasizing a finely tuned mood ring which turns the pale color for an average mood, but an intense color for an episode related to the bipolar illness.