Felt like I was running usability studies today. A colleague was having trouble sharing a document, claiming that the interface for sharing changed significantly with the switch from Google Docs to Google Drive. As it turns out, the sharing interface hasn't changed, and the way you get to it hasn't significantly changed. The culprit was the introduction of Google+ to our Google Apps service. Google+ adds a "Share..." button to the top-right of the Google Drive screen. So, wanting to share a document, she clicked the button, typed in who to share with, but couldn't figure out why the privacy options and link to share were suddenly not there.