[snowwrestler]

YouTube is primarily a video-hosting and search platform. Most users do not use the community features at all. That said, do you really want to hold YouTube comments up as a model of a good community? ;-)

Facebook filters each user's experience through their social graph, and explicitly prefers real identity. It's very difficult to create a ton of anonymous accounts and harass someone without their permission.

Twitter, where everything is public by default, is more analogous to Reddit, where everything is public by default. Both make it easy to create anonymous accounts and direct messages to any other user of the service. And Twitter, like Reddit, also has well-covered problems with virulent racism and sexism.

[Nadya]

> And Twitter, like Reddit, also has well-covered problems with virulent racism and sexism.

Racism and sexism is all over FB too. It just doesn't go viral because it's all within private bubbles instead of out in the open, which is arguably more dangerous.

[snowwrestler]

I agree with you. Edit: what I mean is: well put.