Web 2.0 and Beyond

192    ◾     Web 2.0 and Beyond: Principles and Technologies

publishers were a mixture of professional and amateur producers. Most content was reg-

ularly updated either weekly (30%) or daily (10%) and the median le size was 15 mega-

bytes (MB). ey noted that people subscribed to around six podcasts on average but got

around to playing fewer than four a week, indicating that although subscription could

be interpreted as an expression of interest it did not necessarily translate into consump-

tion. ey also found that 80% of the plays were for the 20% of podcasts that had the

most subscribers (an example of a form of Pareto’s distribution). In addition, they argue

that “podcasts currently constitute a delay-tolerant service” (p. 210), since the ...