Here are some links. Some show the advantages and some show the disadvantages, most of the links completely contradicting one-another lol.

http://www.doggieconnection.com/barf/barf_food.html
http://www.startribune.com/stories/389/3137272.html
http://www.workingdogs.com/vcbarf.htm
http://www.geocities.com/Petsburgh/3023/barf.html
http://www.users.bigpond.com/tedroo/gang/diet.html
http://www.ilcockerrescue.org/testimonials.htm
http://www.diamondpaws.com/health/barf.htm