Sign into Yahoo: with Facebook, with G…
https://ccm.net/apps-sites/email/435-sign-in-to-yahoo-with-facebook-or-google/
Go to Yahoo's Sign-in Helper. Enter your Facebook ID into the Yahoo ID field. Click Submit. You may be prompted to enter a CAPTCHA code as an added security measure. You will receive a password reset email at the ID entered on the sign-in page. Hover over the Facebook link in the Left column on Yahoo. Click on "Quick Overview". You will be redirected to login with your Yahoo ID first if you are not already logged in. After logging in with the Yahoo ID, click on the Facebook link again on the left hand side. Sign in with your Facebook login details.
Go to Yahoo's Sign-in Helper.
Enter your Facebook ID into the Yahoo ID field.
Click Submit.
You may be prompted to enter a CAPTCHA code as an added security measure.
You will receive a password reset email at the ID entered on the sign-in page.
Hover over the Facebook link in the Left column on Yahoo.
Click on "Quick Overview".
You will be redirected to login with your Yahoo ID first if you are not already logged in.
After logging in with the Yahoo ID, click on the Facebook link again on the left hand side.
Sign in with your Facebook login details.
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