As far as I know they haven't hired anyone, from personal experiences most of these leads came from emails asking them what they we're up to... 10x certainly doesn't employ a full time PR person.
Max* is right... we have spent literally zero dollars on PR. The New Yorker approached us for this article. (As did Mashable for their piece last week which interviewed a bunch of 10xers: http://mashable.com/2014/11/09/digital-nomads/ .)
Frankly, it makes it even more exciting to me, because it means this is an actual trend, rather than a manufactured one.
* Yes, the parent is Max Nanis from the article. The article failed to mention that he also currently has a sculpture in the Smithsonian. :)
http://boss.blogs.nytimes.com/2014/09/08/representing-progra...
http://abc7news.com/archive/9075316/
And links to many more in their website:
http://www.10xmanagement.com/