Kotaku

If you were to bookmark just one website to cover all essentials in the gaming industry, Kotaku would be it. Seriously, not only do these guys cover all the significant mainstream news as they happen, but they also post all the interesting pieces everyone else doesn't, like rumors, politics, sales figures, industry figurehead interviews/speculation, and even choice adult gamer fare (search "maximum risky" or "hot tears of shame" to see what I mean). Come to think of it, Kotaku is the only gaming website I go out of my way to visit daily, and if you consider yourself any sort of gamer, you should too.