Yes, it would be great, if XnView could read and write the rating in the same way as Vista is doing it.
What would be the advantage of writing a rating into the all-purpose keywords?
Like this :
[XMP-xmp] - Rating : 3
or like this ... :
[XMP-iptcCore] - Rating : 3
[XMP-###...##] - Rating : 3-star-rating
It's only to illustrate the complexity to standardize all possible cases.
For me, it would be great to have also a rating option to write into the jpg on IPTC like :keywords field, because by this way, it's very easy to use the XnView function " Tools\search\IPTC\ " ( not possible in Ver. 1.92 with XMP fields).
The best way for me is :
a-) a search xnview function on XMP fields (plus in this case 3 write ratings possibilities : XMP (jpg destructive), category.db(non destructive) , and both (destructive) ).
b-) an option to write ratings in 1)only XMP, or 2) only IPTC keywords field, (destructive and not fast search into xnview)
or 3) only into category.db (xnview default), (non destructive and fast search)
or 4) XMP+category.db or 5)IPTC keywords field+category.db (destructive fast search)