The more important nugget is that he is contacted about two attractive opportunities a year for his passive method that have a fairly high probability of leading to offers if he is interested. This enables him to: 1. Accurately appraise his worth to companies, 2. Quickly scale to a much higher number of interesting opportunities through the 14 worthwhile recruiters per year that already value his conduct (even if only 2 per year have opportunities with appropriate fit) by actively involving their aid if he becomes dissatisfied with his current employer/role (or they become dissatisfied with him), 3. Identify hiring trends in his field.

I for one think it is a brilliant strategy, and I'll probably adopt it myself!