It's possible right now with some modifications to Mosets Tree, which would add some calls to JFBConnect which could post the review, the first 100 or so characters of it, or a static message. However, it's not something that's 'built-in' to JFBConnect to automatically do this.
We're working towards, likely with the 3.3 release (we're on 3.1 right now), a way to simply put a class on a submit button or things like that to automatically pop-up a "Post to Wall" box. Until then though, some custom code would be necessary, which we could definitely help you to implement.
Hope this answers your question. If you have any others, just let us know!
Mosets Tree Reviews/JFB
