Kiva.org is a website which connects people with money to lend (like you or me) with recipients of microfinance in the developing world, via its Field Partners who actually make the loans.
If you join today, entrepreneur Reid Hofmann (who happens to be a member of the Board of Directors of Mozilla Corporation) is funding a free trial – everyone who joins gets a $25 loan to disburse for free. If you think this is a good way to help people, I’d encourage you to try it out :-)
Small print: although the join URL contains my public Kiva username, I don’t think I benefit if you use it. Also, you should not assess my level of involvement with Kiva via the stats on that username.