Reddit is much more politically driven, hivemind is much stronger and more passionate. Going against the grain will get you yelled at and people are meaner. Reddit as a company is much more hands on in good and bad ways. Companies use bought accounts and astroturf the front page. I think the difference now is that reddit is much more mainstream. It's become like a lot of the other social networks. Some key people influence reddit a lot now too, for instance "Super Mods." I think these people who game the algorithm are bad for reddit because we don't get to see much diversity of thought on certain subjects anymore.