Alec Saunders dusts off his math books, comes up with some stats and basically tells the carriers, especially the mobile operators that presence and apps like his own TalkNow that works on the RIM Blackberry so well, that the greater the presence data, the more completed calls and in turn more minutes.
It reminds me of how with each new form of media that comes along, how well the prior form seems to do in advertising.
Carriers….can you hear US now?