Finding the laws that govern us

Here is a snippet of a recent announcement from Google:

Starting today, we're enabling people everywhere to find and read full text
legal opinions from U.S. federal and state district, appellate and supreme
courts using Google Scholar. You can
find these opinions by searching for cases (like Planned
Parenthood v. Casey), or by topics (like desegregation)
or other queries that you are interested in. For example, go to Google Scholar,
click on the "Legal opinions and journals" radio button, and try the query separate
but equal. Your search results will include links to cases familiar to many
of us in the U.S. such as Plessy
v. Ferguson and Brown v.
Board of Education, which explore the acceptablity of "separate but equal"
facilities for citizens at two different points in the history of the U.S. But
your results will also include opinions from cases that you might be less
familiar with, but which have played an important role.

This looks like a useful feature.