I've just come across Spun and loving it - thank you!
My comments aren't displaying correctly with Social Plugin. The input dialog appears and header for replies/etc. but the actual comments themselves are not displaying.
I don't know if this is something you can assist with or if I should enquire with the plugin designer (Mailchimp). I've confirmed the behaviour is the same in FF, Chrome and IE.
You can view the behaviour on this post here: http://jacquelinegoguen.com/musings/500-words/
Thanks so much.