1. Visit google.com and search message boards for postings that pertain to Sony digital cameras. Given the kinds of discussions that take place in such settings, what benefits could Sony obtain by having someone within the company "lurk" (i.e., observe without participating) in one or more groups where digital cameras are being discussed?
2. A researcher wants to find out to what extent local residents participate in the recreation and entertainment activities available in their community. She selects a simple random sample of numbers from the telephone directory and proceeds to call these numbers between 6 p.m. and 9 p.m. If the line is busy or if there is no answer, she uses the next number on her list as a replacement. Comment on both the randomness and the representativeness of the sample of persons who end up being interviewed.