How can I let people login into my website with their yahoo or facebook or twitter account?
<p>I tried a lot, but wasn't able to add openid in my website using Yahoo, Twitter, and Facebook. I have added Google as open id in my website but I am not able to add Facebook, Twitter, and Yahoo.</p>

<p>So how can I let people log in into my website with their Yahoo or Facebook or Twitter accounts?</p>
