jimbeetle - 10:47 pm on Jul 31, 2013 (gmt 0)
Getting back to the main topic, is G saying these kind of links hurt the linking site or the linked-to site or both?
Google is saying that since the press release links are built by the site owner they are considered similar to advertisements and should be nofollowed. Google then considers press release links that are not nofollowed "unnatural," thus the website linked to can be subject to a penalty.
Since you deal with press releases I suggest you watch the video and hear exactly what John Mueller says. Firsthand is always best.