This week Google made the fourth announcement in the past 12 months that has made me question whether the company is beginning to lose focus. Google built itself to be the 33rd biggest company in the world (by market value) — the 10th largest in the US — based almost exclusively on one thing: its dominance of the online advertising market, specifically the search advertising market. But recent forays in areas outside of search and into content production and even areas notoriously difficult to monetize have has made me begin to wonder if Google is heading down the “kitchen sink” path that has been so disastrous for Yahoo! [...]