It's actually a standard, not a heuristic: http://en.wikipedia.org/wiki/OpenSearch http://en.wikipedia.org/wiki/OpenSearch If the search box is nonstandard, y

It's actually a standard, not a heuristic: http://en.wikipedia.org/wiki/OpenSearch http://en.wikipedia.org/wiki/OpenSearch If the search box is nonstandard, you can also add it manually by right-clicking the search box and clicking "Add as Search Engine".