Know the philosophy, know the details, and ignore everything in the middle.

Social media is not a fad because it's human.

While companies were getting comfy cozy with the idea of being on social media platforms, social media transcended those platforms, and few businesses have followed.

Google gives preference to its own products, so having a Google+ account influences your search rankings.

The skill sets it takes to be a successful entrepreneur, a successful marketer, or a relevant celebrity is a different skill set than you needed ten years ago, even though that was the skill set that mattered for decades.

Remember the guy in the 80s walking around with a boombox on his shoulder? Why'd he do that? Because it told a story about who he was. Expressing yourself is big business.

If you're not putting out relevant content in relevant places, you don't exist.