This is fantastic!<p>To save the most lives, select Against Malaria Foundation as your charity. It's the current top recommendation from Givewell (<a href="http://www.givewell.org" rel="nofollow">http://www.givewell.org</a>), an excellent charity evaluation organization. They focus on proven cost-effectiveness and transparency.<p>AMF can save lives at a rate of $2500 or so per life saved, which vastly outperforms most other giving opportunities, at least if you require a high standard of evidence. Givewell's evaluation of AMF is here: <a href="http://www.givewell.org/international/top-charities/AMF" rel="nofollow">http://www.givewell.org/international/top-charities/AMF</a>