I'm sure many users have noticed the annoying spam messages that get posted in the comments of every article that reaches the main page. So why not just create a blanket filter for the words "wholesale", "retail", "handbags" and anything else the stock posts contain? Since they're most likely being posted by a bot, genuine users can still use the or tags if they want to post a filtered term.
... On second thoughts, maybe they're there (and never get removed by mods) for a reason. Never mind, then.