20000 site errors and 10000 pages crawled.

[CompleteOffice]

I have recently built an e-commerce website for the company I work at.

Its built on opencart.

Say for example we have a chair for sale. The url will be:

www.domain.com/best-offers/cool-chair

Thats fine, seomoz is crawling them all fine and reporting any errors under them url great.

On each product listing we have several options and zoom options (allows the user to zoom in to the image to get a more detailed look).

When a different zoom type is selected it adds on to the url, so for example:

www.domain.com/best-offers/cool-chair?zoom=1

and there are 3 different zoom types. So effectively its taking for urls as different when in fact they are all one url. and Seomoz has interpreted it this way, and crawled 10000 pages(it thinks exist because of this) and thrown up 20000 errors.

Does anyone have any idea how to solve this?

[Cyrus-Shepard]

(ha, who know the endorsement was limited to 3 lines of text?)

As I was saying... Every time a parameter is added to the url, such as zoom=1, it technically becomes another URL.

Canoncicals for the win

Best of luck!

[MRCSearch]

You need to use a rel-canonical tag. You can read a really informative post by Rand on it here:

http://www.seomoz.org/blog/canonical-url-tag-the-most-important-advancement-in-seo-practices-since-sitemaps

This thread has some good opencart-specific advice regarding implementation:

http://forum.opencart.com/viewtopic.php?f=20&t=18817