Think Before You Speak
An organization that is fighting a losing battle and only succeeding at acquiring teens who want to take a stand against something to feel good about themselves and annoying the rest of the people that know that the majority of homosexuals in the USA don't get offended when people say "that's gay" and even say it themselves.
Think Before You Speak is speaking out against another person saying "that's gay." They should realize that it's much easier and less annoying for everyone else to let the meaning of a word change and its stigma go away than it is to try to get the enormous number of people who speak English to stop saying it by trying to create stigma.