Custom avatars in wordpress comments?

Question

I'm looking for a way to let people connect with facebook when posting comments, and to use their facebook avatars as the avatar for the comments. How can this be done? Do I need to create a seperate user account for those people, or is their a way to simply store an avatar url for each comment that's posted?

Answer 1

Three simple steps to generate a Facebook Avatar:

1. Create an extra field in your comment form for the user's facebook profile (see e.g. WP Engineer for a code example and how to)
2. If the user filled out this field, get the facebook avatar (see this question)
3. Replace the WP avatar with your facebook avatar if a fb profile url is set

All together in this Gist (PHP5.3 required!). Tested with WP3.5 and FireFox/Chrome

Hint: It is strongly advised to read the code comments. There are several informations how to configure the plugin e.g. in the functions.php.