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on Web visitors’
behaviors and mines the resulting huge database for information 
on buying patterns.  DataSage marries an already huge database of a customer’s 
click streams, shopping-cart holdings and queries with other non-web data sources, 
such as off-line purchases and queries, customer service records and product 
registrations.  The result is a Web site that not only knows what you’re buying 
online but also your entire company relationship.  It might, for example, notice that 
you purchase home improvement books every time your address changes and 
offer you special discounts next time. 
There is some limited activity in building software that provides decision
support for e-commerce customers. SopTok Inc. markets a software to personalize
recommendations based on context. Tokboards is community managed boards.
Tok Clubs are on-line affinity clubs. The Suggestive seller analyses the data on these
systems and builds user and product profile to make highly tailored product
recommendations. 
ANALYSIS OF EXAMPLE WEB SITES 
Based on the previous discussion, we analyze the web site designs of 
Homes.com and Homebuilders.com from two viewpoints.  First, how is the web 
site designed to help the company achieve its business strategies?  Second, how is 
the web site designed to assist a consumer to make a home buying decision? 
Homes.com is an end to end online source for home buying, selling and rent-
ing and a valuable tool for real-estate professionals.  HomeBuilder.com provides 
builder information on new homes, subdivisions and developments. It has devel-
oped a customized, nationwide listing of builders’
models, newly built homes and 
housing plans.  Users may search for new homes, builders, custom builders and 
real estate agents. 
Support for the five phase purchasing decision-making process: 
Problem recognition stage- deciding to buy a home 
Homes.com provides no support.  Homebuilders.com provides a buyer guide 
index covering most topics ranging from the advantages of home buying to the 
moving process.  These topics inform a potential homebuyer in fulfilling their needs.