Magento - Google Webmaster Crawl Errors

[Benj25]

Hi guys,

Started my free trial - very impressed - just thought I'd ask a question or two while I can.

I've set up the website for http://www.worldofbooks.com (large bookseller in the UK), using Magento.

I'm getting a huge amount of not found crawl errors (27,808), I think this is due to URL rewrites, all the errors are in this format (non search friendly): http://www.worldofbooks.com/search_inventory.php?search_text=&category=&tag=Ure&gift_code=&dd_sort_by=price_desc&dd_records_per_page=40&dd_page_number=1

As oppose to this format: http://www.worldofbooks.com/arts-books/history-of-art-design-styles/the-art-book-by-phaidon.html (the re-written URL).

This doesn't seem to really be affecting our rankings, we targeted 'cheap books' and 'bargain books' heavily - we're up to 2nd for Cheap Books and 3rd for Bargain Books.

So my question is - are these large amount of Crawl errors cause for concern or is it something that will work itself out? And secondly - if it is cause for concern will it be affecting our rankings negatively in any way and what could we do to resolve this issue?

Any points in the right direction much appreciated.

If you need any more clarification regarding any points I've raised just let me know.

Benjamin Edwards

[Benj25]

I've added a picture of my crawl errors in SEOMoz

Cq3he

[Highland]

Keep in mind that it sounds like you're bloating your index. If anything about your URL is different (even one character) then spiders see that as a new page entirely. Even if you used canonical tags to reduce your index down to just single pages, you're still going to have bots spider all your pages to realize that you don't need that many indexed.

Did you look at the specific crawl errors in seomoz or are these in Google Webmaster?