1. Clicks are at best an incomplete metric and at worst a misleading one for measuring online advertising effectiveness, as clicks do not necessarily lead to revenue or brand equity. Most people do not click on ads.
2. Cookie-based targeting and measurement can create issues in media planning, execution, and campaign evaluation due to high cookie deletion rates and the fact that cookies measure computers rather than people. This can result in inaccurate targeting and missing campaign goals.
3. Considering multiple media placement strategies is important when selecting digital advertising tactics, to consider the relative costs and benefits of each.