[nradov]

The pressure is more directly from advertisers. Major consumer brands don't want their advertisements appearing next to objectionable user generated content.

[snowwrestler]

Why not? Because their customers don't like it either.

It all comes down to what is popular and unpopular--which is fine in a marketplace. That's exactly how marketplaces are supposed to work.

[chrischattin]

It could also be coming from investors. Tencent owns a major chunk of Reddit now.