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How do price comparison sites work?

Like Bizrate, Shopping, etc.



4:04 am on Dec 21, 2008 (gmt 0)

WebmasterWorld Senior Member 10+ Year Member

My main concern is how do they get the data?
Do they have to write custome robots/spiders/scrappers to get all the product information from the main merchants?
Or is there some kind of xml feed format/standard available which they use to share the information?
Anything you know about this topic is welcome :)


5:42 am on Dec 21, 2008 (gmt 0)

WebmasterWorld Senior Member marcia is a WebmasterWorld Top Contributor of All Time 10+ Year Member

It's pay to play, so my guess is that the products must be specifically chosen by the retailers to be submitted (rather than scraped) to them for them to promote.

I do know that in some cases the shopping sites (like NexTag) buy from ad serving networks; there is at times behavioral tracking & marketing, and when products are promoted, it's for specific retailers who the consumer has clicked over to from the shopping site. I know that from my own experience when logging into my ISP web based email.

[edited by: Marcia at 6:36 am (utc) on Dec. 21, 2008]


12:44 am on Dec 22, 2008 (gmt 0)

10+ Year Member

Marcia is definitely correct on the pay to play. If for example you take a look at some travel XML feeds they are very restrictive about the use and display of said content.

But of course, everything can be bought for a certain price.


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