Managing One Person at a Time
Properly done, one-on-ones build relationships. Managers who use one-on-one meetings consistently find them one of the most effective and productive uses of their management time. One-on-ones provide a venue for coaching, feedback, career development, and status reporting.
This sounds about right.
I strongly recommend that PR, marketing and sales people attend meetings of organizations for project managers and developers. You learn things you can learn in no other way. You will also gain an insider's view of software selection and implementation.