<p>I'm struggling to find any vaguely recent references to Yahoo and traditional OpenID which is what that button uses.</p>
<p>They do seem to support OpenID Connect (which is really OAuth) but switching to that is a major undertaking for a relatively niche authentication provider :-(</p>

<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">—<br />You are receiving this because you are subscribed to this thread.<br />Reply to this email directly, <a href="https://github.com/openstreetmap/openstreetmap-website/issues/1966#issuecomment-417962190">view it on GitHub</a>, or <a href="https://github.com/notifications/unsubscribe-auth/ABWnLWcYKdh6oOsKyiLPLPswYjFicvUnks5uXFJqgaJpZM4WWwAu">mute the thread</a>.<img src="https://github.com/notifications/beacon/ABWnLSF78DsZM1moY5p4vRDQXeNoVf5bks5uXFJqgaJpZM4WWwAu.gif" height="1" width="1" alt="" /></p>
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