A blog item was posted on March 1, 2007 about a puzzling differences between Google and Google Scholar (GS) in relation to access to a free version of articles. See: Google Scholar & free papers by Brett, Humber College, Toronto.
Excerpt: “Some more evidence of the weirdness is that GS doesn’t seem to know everything that just plain google knows. For example, if I copy the first line of the abstract and search for that in quotes, GS just shrugs its shoulders, while bare bones google serves up the required paper with its usual alacrity“.
Thanks to Matt Hodgkinson for the link to Brett’s blog item.
Be openly accessible or be obscure 