A few months ago, Nick was recommending to enable 'multi-advertiser ads' in order to get your products or services seen by those with similar interests and shopping habits. However, after a few major alarm bells from clients, Nick is back to update his advice. In today's episode, Nick walks us through what multi-advertiser ads are, the problems that seem to be arising for some when using them and why he believes you should be cautious when enabling them on your campaigns in the future.&n...