Traction
It's hard to pigeonhole the Traction blog. Sometimes you get funny posts that are somewhat related to the industry, like this one in which the agency's creative director explains why he isn't Don Draper for the digital age. Other times you get posts that aren't related to advertising at all, like this recipe for garlic mash potatoes.
We'll chalk those two posts (and others of that variety) up to Traction's unique culture. But if your boss wants to know why you're reading a blog that seems a little off the wall, you can always show them this.
Every few weeks, Traction goes back to school, getting a primer on some aspect of digital. But the great thing is that you don't have to work at Traction to learn something new, because the agency shares the slideshows from its "Learn Phase" series. And because it's coming from Traction, the slides are anything but dry. So when I clicked on its recent SEO series, I was pleasantly surprised by the fact that the presentation 1) didn't put me to sleep and 2) dramatically increased my knowledge of SEO.

Honestly, I can't tell if I come for the distractions and stay for the knowledge or vice versa. But it really doesn't matter. When I check in with Traction, I'm always entertained, and I usually leave the blog with some extra knowledge. Not bad.
Michael Estrin is a freelance writer.
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