I don't think I've made a big enough deal about Blingo. I now use Blingo 80% of the time reserving my trips to Google for speciality things like money conversions.
Blingo now has a blog. What is Blingo? Blingo is a search engine that returns the exact same results as Google (since it is powered by Google) but gives out prizes (currently limited to the United States, I think).
You don't need to sign up to search. But if you sign up as a Blingo Friend when you win, so does your friend!
Spy Journal Tech Tips alerted on Blingo in December of 2004.
(reprinted from Spy Journal Blog Tips)