It's hard to get around Google Shopping when you're in eCommerce, but do you know when to use Google Smart Shopping instead? Kirk Williams, known by his Twitter handle @PPCKirk, joins Brendan Hughes, Optily's CEO, in this episode to talk about the data black hole you get with Smart campaigns, tips on structuring your Google Shopping campaigns, and his new book "Ponderings of a PPC Professional."Kirk Williams is the Owner of ZATO Marketing, a small agency that specializes in paid search on Goo...