Yahoo launched YQ in beta earlier this year.
What criteria will Yahoo use to judge the contest?
* Relevance: How effectively have you set context so that YQ produces results with maximum relevance?
* Prominence: How prominent is the placement of YQ on your site?
* Placement: How creative and intuitive are the placements of YQ icons on your site?
* Usefulness: To what degree does YQ enhance the overall user experience on your site?
The winner of the YQ Challenge receives $5000. Second place receives $2500. $1000 for third.
This FAQ has more info. The deadline for submitting entries is June 19th.