@Dave. In my singular view of the world, we’re dealing with networks and network potentials when we adopt new tech.

So, for example, in an online course, we decide the range of possible connections learners can form through the use of hard (use moodle) or soft/coercive (follow these steps, read this article) control techniques. With your three questions, you are defining connection potential up front. What do you gain from doing that? Why not let people try Google+ and decide if they like it? Why not let the feedback inherent in online systems (“I don’t have time for this” or “wow, that’s kinda cool”) determine which connections are enabled and which are discouraged?

Since your questions are a bit negative and paternal, why not frame your questions like a used car salesmen:

1. Do you want to have more friends than ever possible?
2. Do you have interest in learning more and becoming more knowledgeable in XX field?
3. Do you want to be happy beyond your wildest dreams and always have someone to talk to on twitter/facebook/g+ on lonely friday and saturday nights?

Feed positive energy Dave….