Internet Marketing Information is Needed for an Online Shop

Primary external internet marketing information can be gathered by 
observation, personal and telephone interviews and questionnaires.  This 
assumes that the advertiser has one uniform market, but sometimes the 
market turns out not as expected but as a collection of sub-markets. 

The costs and benefits of market research vary widely and in some cases 
the customer response rate can be very low. A certain amount of judgement 
is required to gauge whether the information gained will be of sufficient 
value to justify the cost. The catch 22 is that if you are to satisfy the 
demands of the market then you need to gather information somehow about 
what consumers actually want.

Geodemographic targeting lends itself particularly well to the online shop 
and direct marketing and to localised media such as local press or posters.

Secondary information is the wealth of information available from third 
parties and sources such as libraries, government statistics, and trade 
directories.

Sometimes it is an easy matter and sometimes it is not, but it is vital 
to get the target for the online shop right.  Sometimes the target is 
difficult to  impossible to determine, and this is what makes advertising 
an art as well as a science.

The system you operate for organising internet marketing information must 
be readily accessible and understandable.