- Either you install Add to Search Bar, and then you can easily* add any site's search to your browser's Search plugins...
- Or for Firefox, you can add Firefox Search Tools, to add predefined plugins,
- Or for Flock, you can use Flock's Add a new Search Engine feature to add any site's search to your browser's Search plugins.
* After installing Add to Search Bar, go to any website's search box, and right-click to bring up the context menu, select "Add to Search Bar..." and that website's search will get added to your list of search plugins.
Ref: Search Engines Plug-ins for Browsers», Search Add-ons», How to add Search Plugins to Mozilla browsers, Why Flock?
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