Details are Here regarding the young cub scout Justin Campbell that was camping with his family when he suffered a black-widow spider bite. Upon going to the hospital he was diagnosed with Leukemia. He now needs O Negative blood donors to help fight infection and bolster his immune system to aid in his cancer treatments.
If you're in the Colorado area and can help, please do! If you're not - please visit your own blood donor center, and at a minimum send him an e-card from the website.
Details on how to help, and how to send a card are at the link above.