interesting article on sexual selection

http://www.seedmagazine.com/news/2006/06/the_gay_animal_kingdom.php

what do y'all think of this? it how does it fit (or fail to fit) into your understanding of being queer-by-choice? the logical extension to the hypothesis seems to be that animals make choices about sexual activity based on social as well as evolutionary survival. does that make any sense for humans, particularly in western society?