This module violates the Google TOS, in particular point 5.3:
5.3 You agree not to access (or attempt to access) any of the Services by any means other than through the interface that is provided by Google, unless you have been specifically allowed to do so in a separate agreement with Google. You specifically agree not to access (or attempt to access) any of the Services through any automated means (including use of scripts or web crawlers) and shall ensure that you comply with the instructions set out in any robots.txt file present on the Services.
You use it under your own responsibility.
Why maintain a multi-lingual site while Google Translate can do that for you?
Simply add your content and your visitors can view it translated with just a click.