Eyton Seidman – Live Search. Why does it matter? Your site – fragments rank / anchhor text / other information you want to appear. Test: unabmiguous where someone links to you. Avoid session paramteters, multiple sites with identical content, identical content for locations. Don’t do the entire site in https–use client side, not server side redirects. How to avoid content being copied – attribution, verify user agent, block unknown IP addresses.

Adding value necessary to “unduplicate” content, block local copies. MSN – no sitewide penalties for duplicate content, filter duplicates at run time, session parameter analysis.

Peter Lindsey – Ask – standard definition, issues. Not a penalty at Ask – similar to not being crawled. Templates not considered. Filter when confidence is high. Most popular page is identified. Act on the areas you are in control of, make it hard for scrapers, contact us.

Amit Kumar – Yahoo. Eliminate dupes at almost every point in the pipeline, as much as possible at query time. Crawl-time filtering, index-time filtering, query time duplicate elimination. Duplications doesn’t have to be exact. Legitimate reasons to duplicate – alternate document formats, legitimate syndication. Multiple language / regional markets (different languages not duplicates). Portal duplicate for boilerplate. Accidental duplication – session ID’s in URL’s. Soft 404’s – not abusive but can hamber ability to display content. Avoid bulk duplication of underlying document, accidental proliferation to many URL’s, duplication across many domains, ask for permission to import content. New things – robot no content, delete URL.

Vanessa Fox – Google – basic overview.

Questions: MSN: 301’s are fine. Meta refresh is the same as a 301. Don’t use no follows to get ride of duplicate content.

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