Yahoo Messenger 10 Comes With Lots of Great Features.This  version is supported on windows 7.
               

Lets Check Some Great  feature of Yahoo

• Improved Video Calling
• Find Your friends Update From Yahoo,flicker,twitter and many more
• Send Free Text message  to your friends mobile Phone
• send large file Up to 2 GBfiles instantly to a friend while you IM
• make a voice call to another  user for free of charge.
• plug in your webcam to share live video with your friends on Yahoo! Messenger.
• share photos from your desktop 
• Send text messages in real-time to your friends on Yahoo! Messenger.
•  Join a chat room to meet new friends while you discuss your favorite topics.

and Lots of feature.Download From Below Lind

Link 1  
Link 2  
Thank You.