People logging into GMail counts as an “active” user on Google+. Go to various web sites and count the “likes” on articles. Google+ is typically about 1/10 to 1/20 what FB is and about 1/15 to 1/30 of twitter.
Google+ is way over-hyped by Google on how “successful” it is.
Wow, I wonder how you’ll avoid that? Perhaps by not using the device.
Yep you nailed it. People will not use it. They will for one or two weeks. They will then start leaving it at home after the novelty has worn off and soon, it will simply sit on the top of their dresser collecting dust. After 6 months, it will go into the top drawer ready to be used for the next “amazing” skateboard adventure but will be forgotten about.