Here are some general steps you can take to be a part & support the movement.
These sites mostly make ad revenue from every visit. Visiting the reposting sites supports them. You can download our free extension for Chrome, Firefox and Opera here.
Ask the mod authors if they permitted the reposting. Please don't spam them.
You can file a DMCA takedown notice to request the removal of your mod.
Please keep in mind: DMCAs are legal documents, and you must make sure you understand the full procedure, and the consequenses for not following it.