 There are also active fan organizations that participate in philanthropy and create a positive social impact.For example, the Harry Potter Alliance is a civic organization with a strong online component which runs campaigns around human rights issues, often in partnership with other advocacy and nonprofit groups; its membership skews college age and above.Nerdfighters, another fandom formed around Vlogbrothers, a YouTube vlog channel, are mainly high school students united by a common goal of "decreasing world suck".