Harry Potter Alliance uses Hunger Games marketing for social justice.
John Green matched $10,000 in donations made to the fandom non-profit's Equality FTW campaign.
Digital video's biggest stars show their support for net neutrality.
Idea Channel's predictions for the possibilities of fandom are easy to swallow—probably because they're already happening.
Plus: John Green and Benedict Cumberbatch star in Sherlock fanfic for charity.
These events not only shaped the year in fandom but will continue to impact fans long after 2012.