We wrote last week how ASX-listed sharemarket forum HotCopper was often used by "dark ops investor relations advisers and pump-and-dump operators" to promote stocks the posters had no intention of holding for long to unwary punters at the best possible price. It prompted a furious response from MD Jag Sanger on social media (who reckoned the only correct fact in the piece was that HotCopper has three times the audience of this newspaper).