SNAP for WordPress Version 3.1.2 has been released. This version fixes several bugs.
= 3.1.2 [01/15/2013] =
* [Critical] Bug Fix – [ERROR] (#100) actions should be a JSON-encoded dictionary with ‘name’ and ‘link’ keys
* Improvement/Bug Fix – Plugin will import all comments from Facebook posts, not just the first 100.
* Bug Fix – Plugin were re-posting the same “Sticky” post in some configurations.
You can install it directly from your WP Admin panel, download it from NextScripts or from WordPress.org
if you possible please develop custom image for facebook instead of using featured image
its my sugession
It was done quite some time ago. Please see here: http://www.nextscripts.com/snap-features/choosing-image/
Is it plan to import User Facebook avatars too within the comments themselves instead of Gravatars or a Default image?
Plugin already does that.