For the "Is a vegetarian diet healthier than a meat based diet? " research question I used "Open & Deep Web" because "Open Web" let me make a direct comparison in one article and the "Deep Web" explored each side of the story.
I used the G.V.R.L. for the "Deep Web" part of the research, and now I understand why you told me how important it is to be thorough. I skimmed several articles there, and found that I had to explore each part of the question separately, and formulate my own conclusion. I haven't used the "Deep Web" much before, and will have to work on my skills in its use. The search parameters are much more focused than the "Open Web". Any suggestions on performing a more effective search?
I should have explained my answer further on my three questions regarding G.V.R.L. I knew the data for those questions were there, because I read the articles relating to my questions. I had a feeling we would have to answer them at some point, and worked ahead a little. I'll continue to work on improving the detail of my projects as we go. Many thanks for another go at the question! :o)