[frou_dh]

According to you it's overwhelming and "not a real KB", but many will consider it a more natural UI for conversing than a web forum.

That's what a lot of people are actually more interested in, just having a place to talk about stuff, not in using/creating a proper KB.

[timbit42]

And then it goes into a black hole and no one else will ever benefit from that knowledge. It's a major reduction in the utility of the internet.