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Thanks for the great advice. However, now I'm becoming even more concerned about dynamically generated custom landing pages.

We are an ecommerce company selling product, and we have about 27k items and another 5k or so of content pages, not to mention 10k product reviews on the subdomain "reviews.domain.com" which are intended to do double-duty as SEO-targeted custom landing pages.

A third-party site-search provider as an add-on service is creating custom pages based on natural search queries that bring users to our site. For example, if a user searches for the term "big-toed troll t-shirt," a page would be generated on a subdomain that would look like "subdomain.domain.com/big-toed-toll-t-shirt.html." The page would include a list of related items that are derived from a search query and internal linking across the the included items. There are other on-page optimizations based on the KW phrase.

These pages are driving traffic, but I am concerned about cannibalization and other issues. To date, there have been something like 50K of these pages created.

Is this dangerous? I have more than 70 employees to support and I don't want to make a bonehead move that could put their jobs at risk.

Thanks.

SIMBiz

I will begin creating custom landing pages optimized for long-tail keywords. Placing the keywords in the URL is obviously important -- Question: would it be detrimental to rankings to have extra characters extending past the keyword?

I'm not able to use tracking code, but need to put an identifier in the URL (clp = custom landing page).

For example, is

"www.domain.com/silver-fish.html"

going to perform meaningfully better than

"www.domain.com/silver-fish-clp.html"

for the kw phrase "silver fish"?

There will obviously be a lot of on-page optimization in addition to just structuring the URLs.

Thank you.

SIMbiz