Using google translation or other online automatic translation tools are becoming mainstream for many businesses. However, they do not realize the devastating effect they bring to their company and business.
First of all, Google doesn't like machine translated content.
Extented reading: http://1news.wikidot.com/blog:2
In Google's Digital Garage SEO course, they indicate that site owners should hire human translators to do the translation jobs and not to use automatic translations. As automatic translation is easily detected by Google and they will consider the content spammy.