Writing in the third person is particularly useful for work where the author wants the readers to get a more objective take on the story. Writing in first person does not leave a lot of room for the story to develop without the narrator being present in major scenes. Writing in the third person gives the writer more freedom to develop the story without the narrator having to be present in every scene.
I think when writing in third person, people get excited because they think that they will be able to get into all their characters heads. When writing in third person limited, this is not the case.
Last semester in my creative writing class we learned how beginning fiction writers sometimes fall into this habit. The new fiction writer will start writing third person limited, then accidentally slip in a different characters thoughts. This wouldn’t be an issue if the whole piece was written in third person omnipresent, but if the majority of the piece is only tuned to focus on the protagonists thought process and feelings, then adding another characters thoughts is inconsistent.
The best thing to do to emulate this practice of writing in the third person is to know the differences between limited and omniscient. Here are some links to help with that:
Third Person: Limited vs Omniscient: http://blog.nathanbransford.com/2012/11/third-person-omniscient-vs-third-person.html
Advantages of Third Person Point of View: http://www.novel-writing-help.com/third-person-point-of-view.html