Stop the dolphin slaughter in Taiji, Japan
If you are on Facebook, you should check out this link about current efforts to end the slaughter of wild dolphins in Taiji, Japan as depicted in the Oscar-winning documentary, The Cove . Most people watch videos like this, think that the exposure will make somebody else do something, and the awfulness will end. Not true.
Unlike many other causes, this one actually is possible to win via public awareness, especially since most Japanese people don't know what is going on.
As for blogs, you can also follow here, and I added it to the blogroll.