Mark showed how using the different searches for the same topic gets a wide variety of results. He used “21st Century skills”. First in regular google, then in Book search, then Google Scholar. Cool thing about scholar is the link of “Cited by” Who else has cited this article? he added doing a search in Google maps. This shows others who might be working on a topic of your interest.
He mentioned the use of gmail to “fake” a student name. googleusername + student firstname.lastname@example.org.
He also showed Google notebook and google blog search, calendar (might be useful for schools for various shared uses like the field, library,etc)