Comment by mrkramer

Last time I searched on Google for some decent blog search engine I couldn't find one. People say Google Custom Search is good, you can also see Marginalia and Kagi getting mentioned a lot. I didn't try neither of them, well except Marginalia but I think Marginalia prefers text only search results but modern blogs are not text only. There was good HN blog search project[0] but it is dead now.

I think most probably blog search engine wouldn't be viable as a commercial product but some hobbyist can definitely pull it off. Good example is listennotes.com a hobbyist search engine for podcasts.

I had a decent idea for a blog search engine, I will try to pull it off if time and health serve me.

[0] https://news.ycombinator.com/item?id=30844149