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Thanks, for what looks like an easy fix.

Thank you. I shall try out your suggestion.

Roger is reporting duplicate page content for my domain name and www.mydomain name/index.html.

Example:

www.just-insulation.com
www.just-insulation.com/index.html

What am I doing wrongly, please?

We have long lists of products are displayed on individual web pages ... with the only variations being in product dimensions and prices.

Could the Search Engines consider these lengthy lists of products for sale to be attempted spamming efforts?

(Example: http://www.just-insulation.com/overview_of_celotex_product_buy_cheapest.html)

Thank you.

We sell a large selection of Insulation Products use template files (.tpl) to collect up-to-date information from a server side database file that contains some 2,500 line items.

When an HTML (.html) file is requested on the Internet, the 'example.tpl' file is accessed, the latest product and and pricing information is accessed, then presented to the viewer as 'example.html'

My question: Can the use of .tpl files negatively impact Search Engine acceptance?