I just heard that the brushing scam is firing up again. They're sending seeds again. They say don't plant the seeds because they might be invasive species. Better to destroy them before throwing them out to avoid their sprouting in land fills.

Supposedly they send the seeds so they can write a positive review on your behalf for the product to generate a positive reputation for the merchant. I would think if enough negative reviews were posted it would remove the incentive to do this.