Senh: The major thing they have to improve is email search. That's one of the main reasons why I use GMail. It's so easy to search for email. The email search in Yahoo Mail is really slow and not particularly accurate.
Senh: This would explain some of viruses I've been getting every so often by clicking on a link from Google's search results page. But in fairness to Google, they are by far the biggest search engine on the planet, and people do perform more than twice as many searches on Google than Bing, Yahoo, and Twitter combined.
Senh: Can it still be called Yahoo Japan, when it's using Google? That's a strange move, especially since Yahoo! in the U.S. will eventually use Bing as their search engine.
Some features just make sense. Google Buzz is one of them. It's nothing new really. It's just Twitter integrated within GMail, and with commenting, it looks a lot like Facebook.