Netflix looks well positioned for strong future growth.Netflix (NFLX -1.51%) saw strong growth in ad-supported memberships when it reported its second-quarter results, although investor reaction to the report was largely muted. Its stock is nonetheless still up about 33% on the year.Let's take a closer look at the streaming service operator's Q2 results, how ads will play a growing role in the company's future, and whether now is a good opportunity to buy the stock.Adding ad-supported membersNetflix reporte ...