The sheer number of articles and forums on the topic is almost overwhelming. Although I did see a few comments from drywall installers that were completely inaccurate regarding installation. One interesting experiment I came across used interior/exterior carpet glue instead of green glue and the tests had better results for the carpet glue. Apparently the indoor/outdoor carpet glue stays tacky and doesn't harden just like green glue. If the experiment were accurate the carpet glue is significantly cheaper than green glue.