How is Site Visits Optimization billed? By vmartinez How is Site Visits Optimization billed? CPC (Cost per click) model CPL (Cost per lead) model CPM (Cost per mille) model CPA (Cost per acquisition) model Related content Related questions:How do you work out the cost per site visit with…What is Site Visits Optimization?What campaign objective should you choose for site…Site Visits Optimization works behind the scenes to…