Ustream viewers were really engaged by Sony's big PlayStation 4 hullaballoo last week -- around eight million folks tuned in to the live broadcast on Ustream, with a whopping 1 million concurrents at peak viewing. On average, said viewer watched the two hour and five minute press conference for one full hour. To put that in perspective, the average Ustream viewer in general watches a given broadcast for 20 minutes, effectively meaning the average PlayStation 4 event viewer tri
