Sometime ago Facebook joined the OpenID foundation and said it would implement OpenID to Facebook website soon … and well they have already done it but it’s kinda hidden in the Facebook site.
Here is how to add OpenID in your Facebook account:
Step1:
Go to settings in your Facebook account; now click on change next to Linked Accounts.
Step2:
Click on the drop down and you can choose from Myspace, Yahoo, Google, Verisign PIP, OpenID or using My OpenID.
Step3:
Select anyone of the OpenID providers from the list and click on Link accounts.
Step4:
Validate that you are the owner and Vola… you are done!!
Next time, if you are logged into one of the OpenID accounts you will automatically be logged into Facebook. 
– Sigh no more entering passwords again and again!!
![History Of Search [Infograph]](http://thesharath.com/wp-content/themes/freshlife_v1.0_mashable_like/includes/timthumb.php?src= http://thesharath.com/wp-img//history-of-search.jpg &h=42&w=42&zc=1)
OK, I did all that. So I have associated an OpenID with my Facbook account. But how do I use that to sign into FB? I get only FB login option. Did you indeed signin with your OpenID?
Yup I have linked my accounts indeed!… which openid did u use? I used Google!
so all i need is to sign in open my gmail account –> open another tab on the browser and open facebook.com… now it signs me into the site.. thats all
I used Vidoop and Verisign PIP. I don't want to use GMail b/c they want to access my GMail contacts list, which I consider to be intrusuve.
Okay so I did that and orginally it worked, then i reformatted my computer and now it wont work, even when i erase everything and try again.. whats the deal???? im using firefox and did before.