Canine Partners are a charity which trains dogs to help disabled people in their day to day lives. The dogs are very well trained, and if you ever get a chance to see them work, they're really amazing. The dogs are trained to do a variety of jobs, like taking a card from a cash machine, opening doors, and emptying a washing machine. I mention this as they have an association with 'clicknow' which means that for every search made, Canine Partners gets a donation. The average of three searches a day works out as about fifty quid over the course of a year.
To start searching, just visit this page.
In order to route more searches via this engine (which itself relies on the usual search engines) I can see myself writing another firefox search plugin, when I get the chance!