Today is World Toilet Day! It is designed to draw attention to the fact that 2.5 billion people don't have one, and inadequate sanitation is costing many lives every day throughout the world.
You can do something from the comfort of your living room (or loo if you have wifi and a laptop)
Twitterers can tweet Michael Foster MP, the International Development minister here: http://act.ly/11s
Facebook users can go to Superbadger (which is a Tear Fund initiative) and send the minister an email http://apps.facebook.com/superbadger/index.php
Or you can sign an online petition at http://www.endwaterpoverty.org/
...or you could write him a letter...