I use Google Scholar regularly also (though I was actually referring to my approach, not their product in that last post). In particular, it helps one locate the university repositories where the authors posted their papers that would otherwise cost megabucks behind an EBSCO or other high dollar paywall. Thank goodness that Peter Suber and SPARC was able to rattle a few cages 20+ years ago so Open Access is finally happening now.
Google used to have a link at the bottom of the search page that you could follow to reach all of the experimental stuff. Now that experimental page is a whole bunch of products.