xml - Price comparison websites - how do they work? -


I was thinking that someone could tell me how the price comparison website works? I mean if this works how I feel (it has been explained below) then I have a very good project that works for me, which should make a lot of money for a long time.

So I think how it works is that each supplier provides an RSS feed which links to the comparison website. Each product has its own unique code (provided by the manufacturer) and it is given in a standard tag in RSS feed. The comparison website collects what data the product supplies and compares those that supply a particular product. For example, book publishers can provide RSS feeds behind each book, ISBN, publisher's names, authors, titles (clearly), RRPs, genres, facts / stories and some other useful information, such as all in the tag & Lt; ISBN & gt; ISBN here & lt; / ISBN & gt; Websites that sell books can filter these books by style, authors, and can show them how they want to use an XSL stylesheet (use of RSS feeds provided in XML).

Is that right, or do I completely misunderstand what RSS is or how it works?

Regards,

If this is the case, then the PS has been tagged incorrectly and it should be moved to another section, please Someone should delete I tried to search websites like price comparison or something similar but there is no such tag. I have considered the most relevant which I could think.

Your concept feels more like the state of the ideal world. In fact the site uses a crawler like any other search engine. Optimizes the site crawler to scrape prices and product information. For example, they know that on the Dell site, the price of an item is in a single device with the ID "foo" and the product information is in the third p tag after the "buy now" text.

Most likely, they also limit the sites that they crawl to retailers.


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