Press release distribution services BusinessWire and PRNewswire were both cited as losers in search visibility by the hands of Google’s Panda Update, by data released by Searchmetrics throughout the year. However, PRWeb, another service in this category, appears to have done fairly well.

PRWeb put up a blog post discussing the impact the Panda Update has had its traffic. Here’s the graph they provide, indicating that traffic has gone up over the course of time since Panda was first announced.

The company says:

The methodology that Google uses to algorithmically determine whether a site is “low-value” or not, is a matter of some debate however Google has been forthcoming in explaining that it involved their “standard evaluation system,” where they “send out documents to outside testers,” review the feedback and then determine how to algorithmically simulate the experience of quality evaluation.

It should be further noted that in addition to our editorial guidelines, we are also constantly iterating our site and the manner in which we syndicate content to ensure ongoing compliance with the evolving standards that Google and other search engines maintain.  This combination of editorial oversight and technological iteration has helped us significantly increase our traffic in the “year of the Panda” while some notable high volume content sites have been hurt.

I guess the question is: what has PRWeb done right that the others haven’t. Any takers?