CHANGING THE WORLD ONE GIFT AT A TIME
Take a look at the Freecycle network. This covers the UK, right across the USA, Canada and Germany, and their "International" page includes countries across the globe, ranging from Australia and New Zealand to Argentina, Trinidad, the Philippines and Spain [Freecycle operates in 120 countries at time of updating this page (8th December 2010), more than double the number when we originally publicised this network].
Basically Freecycle allows people to give away items to those living near to them (all items advertised have to be *FREE*). There are endless groups within the UK, USA, Canada and Germany, and the UK alone has well over 400 groups (more than four times as many as a few years ago). If there isn't an existing group in your area of the world ... then start one, to make it possible for people in your local area to join. Instructions on how to do this appear on the freecycle "website changes faq" page..
If you're under 18 we'd request that you ask your parents to join Freecycle (rather than you signing up). Freecycle enables making contact with people in your local area, to give things away or receive them, but obviously we don't recommend *any* situation where you yourself meet up with strangers. Their "website changes faq" page explains more about potential risk factors.
The Freecycle project is however a *wonderful* concept and will potentially make a whole lot of difference to people across the world, particularly those on low-incomes or otherwise disadvantaged. Our congratulations to Deron Beal, of Tucson Arizona, who founded this amazing organization.