Cindy Sheehan spent part of her Memorial Day posting a farewell of sorts at the Daily Kos. That's right - the grieving mother who morphed into an anti-war icon is exiting the stage. "I have spent every available cent I got from the money a 'grateful' country gave me when they killed my son and every penny that I have received in speaking or book fees since then," Sheehan writes. "I have sacrificed a 29 year marriage and have traveled for extended periods of time away from Casey's brother and sisters and my health has suffered and my hospital bills...