SIGNS: DO THEY MEAN IT?:: MAINE PHOTOGRAPHER

While out walking the other day, I ran across this sign in a field that borders my land. Did it mean what it says? Does he mean to keep ME out, or just people he doesn't know? Does he even really mean it at all, since the sign is rather neglected? I kept to the edge of the field, since it hadn't been hayed yet (he'd better get to it; time's a-wasting). No one suddenly appeared to chase me away, so I will continue to cross the field - carefully - until I'm told otherwise.....