These are the people on Facebook who like to bitch about poverty, war, domestic violence, child abuse, rape, bank robberies, starving children in Africa, liberals/conservatives, Democrats/Republicans, alcohol, drugs, pedophiles, computer hackers, the drug dealer next door, pornography, music, Devil-worshipers, endangered animals, racist jokes, holocaust jokes, religion jokes, political (in)correctness, religion (or lack thereof), animal rights, oppressive work conditions, sexual harassment, or how much their life sucks.
Like most idealists, Facebook Idealists hardly, if ever, lift a finger to combat the perceived evils in the world. They complain because they can't be bothered with finding, or lack the intellectual capacity to find real world solutions to humanities, or even their own, problems. In essence, they're whiny little idiots.
Guy 1: Look at this chick on Facebook saying "I wish solders didnt have to goes to warz, and that AIDS wasnt real!!!!! :(:(:(:("
Girl 1: Wow what a Facebook Idealist.
Guy 2: We all know one
Girl 2: And hate one.