WordPress.com are making it easy to black out your own website in protest of SOPA/PIPA. I realise that these are US bills, but the ramifications of such harmful legislation will be felt all over the world. If you are a US citizen, please take a stand!
Update 2012.01.19: For posterity, here’s a screenshot of this site as it appeared on January 18, 2012 between 8AM and 8PM EST.