Another search site that will donate to RWAF for each search you complete (please note that completing a search means clicking on the link on the search results. It's quick and easy.
You can set RWAF as your preference and for some browsers you can download a handy toolbar. You can also choose Easysearch as your default search engine for several browsers.
Visit http://rwaf.easysearch.org.uk/ and look through the links at the bottom of the page to upload it to your search bar. If you use Chrome you can't make it your default browser yet, but you can save it in your favourites or keep it open in a separate window or tab in your browser.