[andrewstuart2]

And google plus can be installed and configured to share location with someone else. Yet it's a clearly just a social app, though it doesn't show a notification that it's sharing your location.

Just because something can be used maliciously doesn't make it malicious. When people take that idea to the next level, we get abuse like Microsoft shutting down no-ip.

[saalweachter]

I'm not familiar with the Google Plus location sharing, but I seem to recall using the old Google location sharing app, and receiving a periodic email from Google reminding me that it was turned on.