There are too many good causes, so I decided to follow my mothers approach: Pick two/three and give them all the donations that I can make. From that point on I ignore every other charity in the world.

The only charity I support that I suspect anybody will have heard of would be the RNLI (Royal National Lifeboat Institution; the folks that go out and rescue people at sea http://en.wikipedia.org/wiki/Royal_National_Lifeboat_Institu... )

Usually I donate once a year to my chosen three charities, bot sometimes there will be a small bonus at random times.