"No results" message should have additional explanation why that might be

[knowtheory]

No description provided.

[krusynth]

👍 Just to add to this, if a site is offline when it's crawled, the results page should probably show that visually, at a glance. E.g. http://lmgtdfy.usopendata.org/ : Cityofchicago.gov is not a real site afaik.