The comment.create event gives me a useless comment id because I cannot make a request with it

Possible Duplicate:
Facebook Comments Plugin

I want to grab all new comments on my site and then save them to my database.

I could do this by accessing the opengraph api via https://graph.facebook.com/comments/?ids= {YOUR_URL}, but I believe it will cause problems when I have a lot of comments to capture.

So while it would be better to approach the event and get a comment after posting it. So I added an event listener as described here: https://developers.facebook.com/docs/reference/javascript/FB.Event.subscribe/

the comment.create event gives me a commentID, but it is completely useless to me because I cannot request that ID.

Using FQL, I cannot find a comment using this ID as the post_fbid column is not indexed. (see here https://developers.facebook.com/docs/reference/fql/comment/ )

I also haven't found a way to make such a request directly on the opengraph api ...

Is there a way to request a specific comment by its ID?

Leo,