Yahoo Japan will run a Yahoo Point Campaign in March. During a month of March, all registered users (Yahoo ID is required) will gain Yahoo points every time they search. Members can use Yahoo points to pay for several services including Yahoo Music, Yahoo Shopping and Yahoo Travel.
Detail: http://search.yahoo.co.jp/campaign/2011a/ (in Japanese)
It’s an interesting campaign, but why you should pay (give away points) for the use of search? Are they hoping to keep current Yahoo search users from going to other search engines? I wonder if they started to see any changes in the search user trend since the organic search was switched to be powered by Google…