Here is a great website: with a few clicks, you give actual help to multiple sites: animal rescue, hunger relief, child health, mammograms, literacy, and rainforest. They are interconnected, so if you go to one, you can easily click on the others.
It is:
http://www.theanimalrescuesite.com/click

It is quick and easy and really makes a contribution. Of course, there are myriad opportunities offered with each to send free ecards or make purchases, etc.