[andres]

You can add HNSearch as a custom search engine in Firefox as well. Just visit hnsearch.com, click on the favicon in the browser's search box and select "Add HNSearch".

For the Chrom custom search engine it would be better to use the non-javascript url: http://www.hnsearch.com/search?q=

That will get redirected automatically and won't change with the webapp implementation.

You can filter by date/points with HNSearch.

[tokenadult]

I can't reproduce the Firefox steps you mention. I click on the favicon in the browser's search box and I don't get a chance to select "Add HNSearch," but rather a message saying "This website does not supply identity information."

[akkartik]

It's the favicon in the search box, not the location bar.