If you've been interested in Google's recent activities in providing access to legal cases and legal research then you might also be interested in these two recent posts from the HeinOnline blog that compares their service to what Google Scholar has been offering.
HeinOnline or Google Scholar? Why You Should Start Your Research in HeinOnline First (part 1)
"It’s been over 18 months since we announced that Google Scholar (GS) was indexing HeinOnline’s Law Journal Library. ... we want to take a moment to further explain the indexing that has been completed by Google Scholar."
HeinOnline or Google Scholar? Why You Should Start Your Research in HeinOnline First (part 2)
"Shortly after releasing our blog post titled 'HeinOnline or Google Scholar? Why You Should Start Your Research in HeinOnline First', Google Scholar contacted us. We want to take a moment to share with you some of the things that Google Scholar informed us of."
Since this is HeinOnline's own blog it's not entirely impartial, but you'll find many valuable tips on searching in HeinOnline and its relationship with Google Scholar.