Have Google made a big mistake in making Google+ a teen-free zone? One of the big drivers behind Facebook was, like the movement of the herds on the plains of Africa, the movements of teenagers deserting MySpace and inhabiting the fresh fields of Facebook.

But Google has made it quite clear. It is for 18s and up. One angry teenager, Cec Plascott, has vented her anger through the pages of The Next Web.

But Ms. Plascott's plea has not fallen on sympathetic ears. Judging by a lot of the comments, teens aren't welcome.

Ouch.

The Next Web: Should teens be allowed to join Google+? This teen says its success depends on it.