I never understood people who feel the need to shout their negativity. If you don't like something, then just move along. If you do like something, then repin, repost, retweet, like. Simple. Don't inject your negativity into someone else's positive space.
Oh how I love this. Girls were always extremely mean to me growing up. Now I almost cry every time my son steps onto his bus. I'm terrified for my children to have to endure mean people. And I hope they never have to. Be nice! Children learn by example.