October Roundup of Agile Marketing Articles

Here’s my roundup of the best Agile Marketing articles that were published in October. I solicited nominations through Twitter and Facebook; thanks to those of you who provided nominations.
Eric Sangerma, Agile Marketing, Not a Fad, A Necessity
Scott Brinker, 5 Marketing Mega-Trends
Aaron Ginn, Defining A Growth Hacker: 5 Ways Growth Hackers Changed Marketing
Kirstin Falks, Agile Marketing: An Operating System for Marketers
Mathew Sweezey of Pardot, Agile Marketing: Save Your Sanity
Nick Roshon, Agile SEO – Optimizing in Real-Time
Kat Liendgens, 7 Things to Embrace When Implementing Agile Marketing
Heather Rast, Trim the Fat From Your Online Marketing with Agile Methods
Ellie Mirman of Hubspot, Lean Marketing: How to Run Your Marketing Team Like a Startup
As always, if you have Agile Marketing articles that I might have missed, link to them in the comments.