I've added a message to my photography site about it, and I've also put my star trek forum on a 12 hour 6am-6pm PST blackout in support of the cause. You can read more here:
There's a WP plugin that'll do it for you. Didn't get around to it on any of my sites though. I had thought about doing something here, but haven't had a chance to do much.
hahhaha big time!!! I run a Star Trek role playing forum and we just passed 17,000 posts. I've been to conventions, have talked with the stars, even dressed up as a Klingon once.