http://www.psize.net is for Fashion and celebrity info in Japanese.
And it uses following APIs:
-Yahoo image Search (Japan)
-Yahoo auction (Japan)
-Amazon ECS
-Valuecommerce
-Google Maps
-Rakuten
-Ebay
-Kizapi
-Commission junction

http://www.caramelist.com is for Japanese used car information in English.
This uses the APIs:
-Carsensor Lab
-Technorati
-Google Search
-Amazon ECS
-Yahoo image Search
-Following are the bros.
http://euro.caramelist.com/
http://wwwj.caramelist.com/