Over on another thread, I was asked about Schwartz PR (note, correct spelling).
Their HQ offices are in Waltham, Massachusetts. Recall a few years back when the Wikimania 2006 was held in Cambridge, Massachusetts? In the months running up to the conference, Schwartz PR lent some pro bono promotional & marketing assistance to the Wikimedia Foundation.
I immediately noticed that Schwartz PR (or, Schwartz Communications) wasted no time in posting on their corporate website that, among their clients, was the Wikimedia Foundation. (That's how I even noticed this whole to-do, in the first place.) Then I looked up and found their User account on Wikipedia. I also looked up their corporate "article" within Wikipedia, and (if I recall correctly) it was very clear (from the user name) that a company principal had authored it. At the time, I was in the very formative stages of conceptualizing Wikipedia Review as a paid editing service, and I was thinking that -- "Hey, if they offered some pro bono work and got a special deal within Wikipedia, maybe I should do some pro bono work for the Foundation, too." I decided that a phone call to Schwartz's Rob Skinner would be useful to find out exactly how much effort they put into the Wikimania project.
Skinner as much as told me that it was a very tiny amount of some local pre-event boosting among the Boston tech field. Not much at all.
But they had parlayed that into listing Wikimedia as a "client" on their own website, and getting this special account on Wikipedia (that they didn't even seem to know how to use effectively).
Well, it didn't take me long (after Jimbo bashed Wikipedia Review) to start pointing out how hypocritical was the Wikimedia governance, that they'd give a little "tit for tat" to those firms that give them services for free, all in defiance of several WP rules against multi-user role accounts, corporate accounts, COI editing, etc. All I had to do was mention the favoritism on a few Wiki-community pages, and the Hive did the rest -- they had the Schwartz Communications article AfD'd in days.
That's about it.
EDIT 1: I should probably also mention that the Wikimedia Foundation tax Forms 990 for the relevant period(s) leading up to and including the Wikimania 2006 stated that the WMF had received donated services (line 82a), but they elected not to attach a cash value to these items (line 82b).
EDIT 2: My data banks remind me that this edit was apparently humorous enough for me to e-mail it to someone in October 2006. I suppose a Wikipedia administrator might have access to the now-deleted edit and could contemplate re-posting it here?
EDIT 3: I had a few things to say about PR firms and Wikipedia, back in late 2006.