I totally agree that Amazon would not "wish" to risk their reputation by snooping on their customers, however if they are forced to do so they might comply. Per

I totally agree that Amazon would not "wish" to risk their reputation by snooping on their customers, however if they are forced to do so they might comply. Perhaps Echo is not installed in many homes for it to be any interest of NSA yet. But if it were installed in millions of homes I would imagine some agents knocking Mr. Bezos's door. In terms of sending data, I would imagine they may optimize it by first matching the spoken keywords before they start extensive logging, or you have to be on some list to begin with.