Where are most respected agriturismos listing these days?
Some of the old sites I've used in past travles (agriturismo.it, etc) seem to have a fraction of the listings of booking.com. I am unsure as to who can be trusted, and who can not.
I also seem to remember Rick's books having more agriturismo listings in the past (not so many in the latest 2018 guide). We'd had amazing success staying with those he listed in tuscany a few years back.