Re: My Website - Sign-up using your facebook account
This question is beyond the scope of Constant Contact and our API features, but I think I can point you in the right direction. What you're asking about is the Facebook Login service, which is a type of OpenID login service that Facebook provides.
This service allows you to register or create users by using the Facebook login service and existing Facebook information instead of creating your own login or registration system. When a user signs up this way, you request to have access to different pieces of their Facebook profile and network information. Of course, the more information you ask for the less likely it will be that a user will sign up for your service.
Using this service requires knowledge of the Facebook Login system and their API features. I am not familiar with any developers in this space, you may want to look into the Facebook Developer Network to find a developer who can do this for you. You can also use these public Facebook APIs yourself if you have any web development experience.
Hope this helps!
Dave Berard Senior Product Manager, Constant Contact