There are some that would only accept Microsoft TechNet, Articles, White Papers. Some would venture to trusted sites and blogs. As for me, I look at what I consider my top 5 answers for a particular question, best practice and test it. In my opinion, anything you get from the internet you have to test to make sure that it fits and works in your environment. A good DBA is always compeled to evaluate what is the best for his/her environment.:-)