Generally, I refrain from writing a response. But since Internet of Things is so close to my heart, I would like to add a few points to this article:

1. I really appreciate a marketer (Is this the right word?) making an effort to understand this technology.
2. Thank you for writing Internet of Things instead of starting with IoT. IoT without reference is a stupid word (my personal opinion).
3. Internet of Things is an evolution from M2M communication (http://www.techvibes.com/blog/from-m2m-to-the-internet-of-things-viewpoints-from-europe-2011-07-07) which goes way back.
4. Your differentiation between things and devices is no concrete. What I mean is any device can act as a thing and a thing can act as a device in Internet of Things.

For me, Internet of Things is an ecosystem where everything is connected to each other and can operate/control other things via the Internet.

Of course, the opportunities are tremendous.