Those of us, who teach or use Google or Google Scholar (GS) might find the most recent Peter Jacso’s piece on Google Scholar to be of interest – http://www.libraryjournal.com/article/CA6698580.html?&rid=1105906703&source=title
Please be very careful using this tool. We talk about the perils of GS and compare it with Compendex and Web of Science in our Google workshops.
We ourselves saw those problems almost five years ago, and they are still not corrected:
Giustini D, & Barsky E. A look at Google Scholar, PubMed and Scirus: comparisons and recommendations . J Can Health Libr Assoc 2005, 26(3): 85-89.