[gk1]

From looking at their submission history, it seems this is the first "hit" they had, so content marketing probably hasn't helped much... until now.

FWIW my own pipeline of consulting clients relies solely on introductions and blogging ("content marketing" but much less formal). I continue to encourage new freelancers/consultants to write and share their knowledge more often.

[lostctown]

I'm a bit cynical because I know good marketers maintain rep on many accounts on several key social network/forum sites. It's easy to do. Just queue up some actually interesting informative posts and the do a little automation to spread them out over time.

[philfrasty]

Hint: it's not easy to do

[lostctown]

Easy wasn't the right word. Straightforward would have been better. I understand there is a great deal of effort that goes in to it.

[gk1]

By "write and share" I meant writing substantive and informative content such as essays and guides. I did not mean social media posts, which I think is what you're referring to.