Zillow and Etsy report 2nd-quarter results, and the resulting directions of the stocks indicate how important revenue is. Motley Fool Asset Management’s Bill Barker analyzes Zillow’s acquisition strategy and the degree to which Etsy is Amazon-proof. Plus, we dip into the Fool Mailbag and look forward to ESPN’s re-launch of “The Ocho”. (Tangents include the origins of tennis, random acts of kindness at Wawa, and an upcoming road trip for MarketFoolery!)