Fascinating - more marketing experts chattering about Twitter - nay-sayers now focusing on "poor retention rate". At least one commnentator noted that so many people who use Twitter don't go through the website - they use other apps like Tweetdeck - that we really have no idea what the retention rate is.
Am I the only one wondering at the energy being invested around putting Twitter down?
This Business Anthropologist will stick with the bet that Twitter represents an innovation whose impact is yet to be measured - we don't yet know how to measure it. Maybe someone will come up with a new metric for total energy focus -- to include, one might hope, people developing new applications, new actions, new terminology... and new criticisms.