One of the difficulties of using chat rooms and blogs to collect competitive intelligence is that ________.
a. their unstructured nature makes it difficult for marketers to find relevant messages
b. people are generally unwilling to share their perspective on products and services without being paid for them
c. they constitute a very expensive form of market research
d. it is difficult to access chat rooms and blogs because of privacy issues
e. All of the above are difficulties experienced when using chat rooms and blogs to collect competitive intelligence.
Answer: a