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I have an old site that we are re-building, and also moving form Yahoo Stores to Big Commerce. yahoo uses site.com/page.html and BC uses site.com/page. Is there any SEO benefit to keeping the old .html format? some of the pages on the old site have no links to them from external sites. Do they even need re-directs, or should I just let Google find the new page equivalents when they crawl the new version of the site? While some of the old pages (primarily product pages) have OK urls, others have obscure product numbers as the URL. Obviously the latter need re-directing to a more relevant page, but what about situations like this:
_/accessory-product.html _ > product-accessory
In this example, the existing URL is fine, except for the .html extention. If I just used the old URL, would having a mix of /sample.html and /sample pages hurt me? Thanks in advance for your help and input! Dave