I assume that you're talking about the article by Roger Hughes on getting started with Spring Social (since that is the context of this forum). I was unaware of any problem with the article until you mentioned it. It's unfortunate that his example didn't work, but unfortunately I don't have the opportunity to verify all examples and articles written by those outside of our organization. In this particular case, I wasn't even aware of the article until I read about it via "This Week in Spring". I'm glad Roger is fixing it, though.
To be clear, not everything linked to from the "This Week in Spring" newsletter is written by those without SpringSource. Our developer advocate group collects anything they can find about Spring and uses that newsletter to bring it to your attention; but they do not necessarily review the work in detail. In the end, I think we can agree that sharing information (even if it isn't entirely correct) is better than not sharing anything due to lack of time to review it thoroughly. In those cases, the proper response should be to contact the author and have them address the concerns.
Spring Social Project Lead