petition sites and people who think that liking things on facebook or signing one of these makes a difference.
If you want to make a difference actually get out there and do something about it. Liking things on Facebook or twitter or just typing your information into a website and thinking you made a difference is ridiculous, insane, and lazy. Likes and tweets don't find war criminals, don't change policy, nor do they provide resources necessary to help people who go out and do the actual legwork. Go volunteer or donate if you actually care.