If you posted your design as Open Source, someone else
producing it isn't a knockoff, it's the system working as intended.
What is it when the design is open source, but they're not complying with the terms of
the license? That's what really bugs me, the "cost" of producing your own
from one of our designs is attribution and releasing your design under the same or a
compatible license, but apparently that's too much to ask.
Thanks,
Jonathan