I'm using it on a blog with RSS Graffiti with no problem :
- the blog : http://www.chefnini.com
- the fan page : http://www.facebook.com/pages/chefNini/139604246060363
I've check your page and the problem is that the posts added by RSS Graffiti links to urls like
So Facebook Comments Importer doesn't know that this URL is the same as
Facebook Comments Importer use this URL to link the FB post to the WordPress post.
Maybe you have to configure RSS Graffiti to directly check your blog feed (not the feedburner one) or configure Feedburner to show the real link.
For chefnini.com, I use Feedburner too and have no problem.
First, try to configure RSS Graffiti to check "http://www.shoutmeloud.com/feed".
If it does'nt work, tell me what are the options enabled in your feedburner account.
If it works, please tell me anyway, I'm interested for this problem !