when you will click on the above link, you will see the below screen—–
Then click on Sign In button—–
Then you will see yahoo (sign in) window—–as below
Finally you will see the below screen on your computer screen—–
Now you can start chatting with your friends—–
Note:- You can chat only those friends, who are exist in your add friends list but you can add your friends directly through yahoo id or messenger id. you will not get any facility to chat with unknown online yahoo members (as chat room facility in yahoo messenger).