Morgan Stanley’s Matthew Robinson ‘revelation’ that teens aren’t on Twitter should have got a “so what?” reaction. What technology teenagers make use of isn’t hugely important.

But Twitter is important to brands. It has transformed (an exaggeration?) how in real-time consumers learn about, and share information on, companies and their products and services. Live, or still warm, conversations are of course manna from heaven for brand managers. The opportunity to engage and influence, albeit on a near one by one basis, is compelling.

But this looks more like customer relations – social CRM – than public relations. An important difference?