For a donation of $399, one XO laptop will be sent to empower a child in a developing nation and one will be sent to the child in your life in recognition of your contribution. $200 of your donation is tax-deductible (your $399 donation minus the fair market value of the XO laptop you will be receiving). Between November 12 and November 26.
http://www.laptopgiving.org/en/give-one-get-one.php