This is Japanese search ranking in Feb. 2008 from Goo Japanese portal site. Goo is managed by NTT group, telephone company in Japan. You'll see what is popular in Japan now.
1. 確定申告
Kakutei shinkoku: tax return.
2. 倖田來未
Kumi Koda: A singer.
3. 脳検メーカー
Nouken maker: A web service, sort of a game. Inputting your name, you get suggestion words which you might want in your mind.
4. L CHANGE THE WORLD
A movie which is from "Death Note". "Death Note" is a popular Japanese manga.
おおにしこうじ
Koji Ohnishi: An artist who used be a talent.
東京マラソン
Tokyo marathon
花粉症
Kafun-sho: Hay fever
エディソン・チャン
Edison Chang: A HongKong movie star.
イージス艦
A battle ship which includes Aegis System. 19/02/2007, Atago of Aegis System collided with the fishing boat.
大乱闘スマッシュブラザーズX
Dairanto Smash Brothers X: a Nintendo Wii game which is "Super Smash Bros. Brawl" other in countries.
read Goo ranking Feb. 2008