When I was on another plant site (not DG) I learned that yes, people do join just to get free plants and seeds. It was one of the reasons that I left that site and came her to ATP. When I see one of the people from that old site join here I cringe. I want to scream and yell at people..."Don't send them anything!!!"
Making your list private is probably the best option as Horntoad suggested. Dave likes to keep things 'positive' around here, so posting the names would probably not fly.
Don't respond to them; maybe they will quit asking.
