Usage field added
I added a custom field for Gallery Items, called Usage. The field has two pre-set values: Personal Only, and Personal and Commercial. The Usage field is under the Custom Fields tab when editing your gallery item.
Those who have already uploaded images will need to go in and change the value to whichever is appropriate. If no value is selected, Personal and Commercial will be assumed.
If you've uploaded a lot of items I can change the Usage values in the database, just let me know what they should be.