Open Multiple Yahoo! IDs on Latest Yahoo Messenger.
Method.
Go to
>Start
>Run
Type
regedit
Ok
>HKEY_CURRENT_USER
>Software
>Yahoo
>Pager
>Test
Right Click on Test and choose New Dword value.
Rename it as Plural.
Double Click and assign a decimal value of 1.
Now close registry.
For signing in with different ids, open messenger again and again.
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