It would be nice if one could verify that all tags in the f-spot-database also are
stored in the photos This could be necessary to do if you, for
instance, have not had "Write metadata to file" activated all the time. It would also be a nice thing to have when one have renamed tags.

The above is most important but it may not be hard to fix the other way around too at the same time. verify that all
metadata in the files are the same in the database.