#SavePoint on why their panel was cancelled: http://www.theopengamingsociety.org/savepoint-dear-community... LevelUp on why their panel was cancelled: https://twitter.com/randileeharper/status/658780409765994496
Which side is which here? I'm not really clued into the whole GamerGate thing... I have seen Randi Lee Harper say some very unpleasant things, and some even more unpleasant things said about her. I know nothing about the Open Gaming Society, but reading their website it seems like a relatively sane organization.
Randi Lee Harper is noted for making tools to help victims of online harassment. Level Up panel description was "A panel from experts on online harassment in gaming and geek culture, how to combat it, how to design against it, and how to create online communities that are moving away from harassment."
The GamerGate crowd claim that they care about "ethics in game journalism" and that the abuse that feminist gamers experience doesn't have anything to do with them. So theoretically, there aren't opposing sides here.