:Answer: It is not different.  It's a term used by a very few entities in the field, which for better or worse, must've been the ones most familiar to the person who originated the article.   

 :The article is worth keeping, but the term is incorrect with respect to generally accepted usage.  Compare hit counts for: 
 :* "behavioral retargeting" =~ 16,200 
 :* "behavioral targeting" =~ 1,500,000 
 :(With UK spelling, 4200 vs 670,000.) 
 :I'll update it and set up a redirect. 
 :