Darren Barefoot did a great presentation at Gnomedex, he makes up his own good deeds currency and goes through various ways of making good deeds, how they compare (very subjective of course) and gives us a few leads on how to give more, it’s followed by a great call to action. Funny and certainly an important issue to think about. I’d recommend reading the post which is pretty much the text of his presentation but you can also see the annoyingly backchannel subtitled videos within this post.