#1
Yep, Yelp is still a total scam despite their claims of reform everytime they get publicity about their criminal behavior.
For those who ask "What crimes?", among their crimes are extortion and fraud. Deleting genuine positive reviews if you don't pay them, and deleting negative reviews if you do is simply not legitimate: there is no defense for it; the only explanation possible is that it is an extortion racket. The fraud is that they misrepresent themselves to the public as an impartial review site.
It's obscene that they are still in business and just shows you what a lousy job most state attorney generals are doing.
#2
A completely separate issue is the review. The article says that he gave several 1 star reviews to dog trainers, but only one 5 star review on 11/9/2010 to a dog trainer, "Perfect Manners Dog Training" in Naperville. This suggests that he may be an employee or friend of the owner of that business. However, comprehensively searching his 463 reviews reveals that he also has a 5 star review on 11/9/2010 for "Thunder's Pack Canine Training" in La Grange Park and there are only two 1 star dog trainer reviews in total, the other being for "Wetnose For Dogs" in Forest Park on 9/11/2010. So either the reporter was inaccurate, or some reviews of Justin G's have been changed. Hard to say at this point. Given the huge number of reviews by this Justin G., many extremely detailed, he is probably legit.
#3
Yelp covers things up. Here's the bad review in question:
http://www.yelp.com/biz/haus-von-brader-dog-obedience-traini...
Notice that there are now several good reviews shown. However you can verify in Google's cache of Yelp that there was a single 1 star review on Aug 26, 2011 23:28:48 GMT, last week, a total rating of 1 star, and no other reviews shown. Since then, this article has come out (on September 4 2011) and Yelp has just now changed the site, with the date of all the good reviews being 9/4/2011, obviously when they approved them and not when they were originally posted, which was obviously before the article came out. Time and time again, when bad publicity hits from Yelp's criminal fraud, they patch things in a single spot to cover up their fraudulent activity.