[pants2]

Kagi has a built in 'Forums' search that limits results to Reddit, HN, and other high-quality user discussions. It's probably my favorite feature.

[sira04]

Google had that and I used it constantly. Then they removed it of course. I can't remember if it included small blogs as well.

[pants2]

Yes you're absolutely right, I used it too, it's a shame they got rid of it but Google will be Google