こんにちは Japanese 
Yahoo! Messenger 9.0 just released in Japanese . It doesn’t has the full features for now but i hope it is good to go.
Download Yahoo! Messenger 9 Japanese
Way to go Yahoo! Messenger Japan team
p.s: Hey Hatta hope it’s good for you and your people
One again good news for Mac lovers (i am one of em)
So lets see what’s new
- Performance and memory bug fixes (over three dozen).
- Clearer messaging when receiving anonymous messages from your Pingbox.
- A new message style called ‘Kobi lite’ . To try it out, go to Preferences > Messaging, then change the Conversation style.
- If you want to cancel automatic sign-in when you launch Yahoo! Messenger for Mac, hold down the shift key.
- When you report an IM as spam, it also adds the sender to your ignore list .
If you want to participate don’t hesitate to send your feedback
Woot Mac Users
Yahoo! Messenger team finally listened you and added voice calling feature for the new Mac version (Beta).
You can make free PC-to-PC calls or sign up for a Phone Out account to make calls from your Mac to regular or mobile phones worldwide for as low as 1¢ a minute (see rates).If you want friends to be able to call you on your Mac from any phone, sign up for a Phone In account and choose a number.
Mac users can also enjoy two other handy features: free voicemail and call forwarding. If you’re away from your Mac or signed out of Yahoo! Messenger, friends can leave you a voicemail which is then delivered as an email attachment to an address of your choice.
If you want to make sure you don’t miss any calls, use the call forwarding feature to immediately send incoming calls to any regular or mobile phone number. Note that you do need a Phone Out account to use call forwarding.
Voice & Calls
Check out this new section in Preferences menu, it will allow you to setup your email address to receive your voicemails.
Voice & SMS
You can now start a call, or send a free SMS (text) message to a friend’s mobile phone from the button in your IM windows (you and your friend may be charged for receiving your SMS message depending on their mobile phone data plan.
See more features , download
Yahoo! Messenger for Mac Beta
If you are still using Yahoo! Messenger version 5.5 and 5.6 as of today you will not able to. Yahoo! Messenger team making them retire so they will not support it.
If you do not want to update to latest version you can use
Yahoo! Messenger for the web.
Download Yahoo! Messenger
Yahoo Messenger 8.1 (Latest stable version for now)
Yahoo Messenger 9 (Beta)
Yahoo! Messenger for Vista (Alpha)
I know some friends in my buddy lists will not accept any file or link from their friends for security reasons. I don’t bother when a friend decline my request and i can understand that it is why cause they scare to be hacked.
Good news is if you have Norton Antivirus 2007 or 2008 or Norton Internet Security 2007 or 2008 you can stop being paronoid and start to accept files from your friends. All files will be scanned by Norton for virus or other malicious chits.
It is only for windows users and you should be using Yahoo! Messenger 9 +
Since i stopped using Norton Antivirus product years ago cause it thinks it is owner of my computer but hey it is my computer and i want to control it, i just scan every file i received with my current virus program before open it.