1. When DOJ sent Google a subpoena for search logs, Google fought it in court, while Microsoft, Yahoo, and AOL did not: http://news.cnet.com/FAQ-What-does-the-Google-subpoena-mean/...
2. Google is lobbying to change federal law to require search warrants backed by probable cause and signed by a judge for stored cloud email (and Google Drive, Dropbox, Flickr, etc.) files, a privacy protection opposed by the Obama DOJ: http://news.cnet.com/8301-31921_3-20123710-281/google-facebo...
3. Google began requiring police to obtain search warrants for email after the Warshak decision nationally, even though it was binding only in a few states. So did (from memory) Facebook and Microsoft.
4. Google became the first tech company to disclose information about FBI warrantless data acquisition through NSLs in March, and in April became the first tech company to challenge their legality in court: http://news.cnet.com/8301-1009_3-57572634-83/google-offers-d... http://news.cnet.com/8301-13578_3-57577958-38/google-fights-...