Sharing body of posts on FB

First, thanks very much for the plugin – it’s great!

I was wondering if either of the following are possible:

– it looks like the plugin only pulls the title of the post into facebook. Is there a way to change that so it can pull either the whole post or a specified excerpt (e.g. first 200 characters or something)?

– is there a way to change the update frequency (i.e. FB comments back to WordPress?

Do let me know.

Thanks!