When it debuted in July, Google's (NASDAQ: GOOG) Chromecast was widely pondered to be true game-changer--a rare non-hyperbolic use of the term. Priced at $35, relatively easy to configure, and blending the vastness of YouTube with the OTT ubiquity of Netflix (NASDAQ: NFLX), Chromecast was seen by many as a Holy Grail device that would truly accelerate mainstream online video adoption. Eleven months later, as FierceOnlineVideo's Samantha Bookman points out, that mainstream adoption is indeed occuring, but it isn't necessarily being driven by Chromecast. In fact, the dongle's infiltration into U.S. homes seems to be flattening out, holding steady at 6 percent over the last two quarters of 2013. You can read the full report here.