Cyanide in fruit pits - how many are safe to eat?

The Art of Drink blogger, Darcy O'Neill, calculates how much cyanide can be produced in the human body by the ingestion of cherry and apricot pits: http://www.artofdrink.com/archive/research/cyanide-in-apricot-cherries-pits/

Cherry Pit Spit contest held at Blenheim Cherry Fest, 2009

http://ckdp.ca/2009/07/17/cherry-pit-spit-contest-held-at-blenheim-cherry-fest-photos-and-video/

Best to spit them out!!