circulation
number of people bought it
readership
people who read it
primary
doing it yourself
secondary
using things other people have done
books online survey
television
newspapers
internet reach
books and journals
magazines
tv 
gets people opinon
can lie or not do it
give reward for compintion
have to pay
internet
can be acsesed anywhere
easy to find things
can be inacuralte
has sorces verified
it can become expensive
james bond
marketing possibility's
trends for product development - it's important for media companies to interse dater
technical convergence
dayly mail
quantaive and quolive dater
qualivie dater - discripive dater and indervisal
qualitive
with opinos
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