Are trailers copyrighted? Is it allowable to freely use a movie trailer in one's own works or website?

Here is a screenshot of an example where they had given the name of the publisher and an amazon.com link to sell the movie. 
The application references Walt Disney Pictures and is linked to [this Amazon page](https://www.amazon.com/Antz-Woody-Allen/dp/0783231474/ref=sr_1_1?ie=UTF8&qid=1346184111&sr=8-1&keywords=antz).  Is this a fair usage?


[![enter image description here][1]][1]


  [1]: https://i.sstatic.net/upua7.jpg