I am a big fan of combining my search results. Until now I used various FF plugins, but now I am using ergo search software. http://www.yourergo.com
ask.com, snap.com there are also samo older and not so popular; mamma.com, alltheweb.com and the old "google" altavista.com
That's not true. While the majority of my traffic is generated by Google, I also get a nice percentage of traffic from both Yahoo and Live. In fact, my last 8 sales originated from those search engines. Millions of people use Yahoo and Live, so they do matter. Dale King
Ask.com is bigger in Britain, I think. AFAIK Baidu is bigger than Google in China. So if you want to make an impact on regional audiences you sometimes need to look beyond the big 3. However, there's a rumour that Ask will be abandoning Teoma and using Google results: http://www.alleyinsider.com/2008/2/iac__ready_to_bail_on_ask_ .