Some third party businesses are providing consolidation of data feeds so that comparison sites do not have to import from many different merchants.
Online sales already account for 13% of the total UK economy, and its expected to increase to 15% by 2017.
There is a huge contribution of comparison shopping websites in the expansion of current E-commerce industry.
The first widely recognized comparison-shopping agent was Bargain Finder, developed by Andersen Consulting (now Accenture).
The team, led by researcher Bruce Krulwich, created Bargain Finder in 1995 as an experiment and published it on-line without advance warning to the e-commerce sites being compared.
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