Seems like this would be easy enough to do by just excluding those sites using the search engine's own syntax (it's usually something like "-site.com" or the li

Seems like this would be easy enough to do by just excluding those sites using the search engine's own syntax (it's usually something like "-site.com" or the like). You could easily create your own OpenSearch search engine. Very little coding is required to do this, and it's supported by most major browsers. https://developer.mozilla.org/en-US/docs/Web/OpenSearch https://developer.mozilla.org/en-US/docs/Web/OpenSearch