How to find the sum

I am experimenting on the blog with some—as they say on AMC’s Golden Globe-winning series Mad Men—ads. Please do not be alarmed. I welcome your feedback. Personally, I suspect the products Google chooses to display based on my posts will be entertainment in themselves. Feel free to click on them, get a feel for it. Just try it out. Who knows, right? In any case: Rebuttals? Rejoinders? Reifications?