Only a rough sketch on a piece of paper so far. "X" is the review, "Y" is the item being reviewed.
RDF prefixes used in above diagramme:
xFolk / hReview Equivalence
xFolk can be thought of as a minimal version of hReview.
|hReview Term||xFolk Term|
|type||type is always "url"|
|item fn||taggedlink (link text)|
|item url||taggedlink (href)|
|rating (best, worst)||/|
With this in mind, an xFolk entry can be treated as simply a funny-looking hReview and the hReview to RDF mapping then applied to xFolk.