What search bar do you use to earn on your blog/site

Tweet

I know that we can earn from google search bar on our blog/site when people use it to do their search and then click on an ad in the results list. There is also another one that I learned today from a friend here on mylot. It's called questseek but I have not explored it yet. Do you use a search bar on your website? Do you earn from it? Thanks!