Mikkel deMib Svendsen Duplicate Content & Multiple Site Issue Mikkel deMib Svendsen

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1 Mikkel deMib Svendsen www.joyzone.dk www.redzoneglobal.dk mikkel@joyzone.dk Duplicate Content & Multiple Site Issue Mikkel deMib Svendsen www.demib.com www.redzoneglobal.dk mikkel@redzoneglobal.dk Technical Duplicate Issues Mikkel deMib Svendsen Creative Director, deMib.com & RedZoneGlobal Denmark Director of European Business Development, WebmasterRadio.FM Contact: mikkel@RedZoneGlobal.dkmikkel@RedZoneGlobal.dk – (+45) 22 27 07 10

2 Mikkel deMib Svendsen www.joyzone.dk www.redzoneglobal.dk mikkel@joyzone.dk Duplicate Content & Multiple Site Issue Mikkel deMib Svendsen www.demib.com www.redzoneglobal.dk mikkel@redzoneglobal.dk Common Technical Duplicate Issues With & without WWW Session IDs URL rewriting Many-to-one problems in forum Sort order parameters Bread crumb navigation The list is infinite! It often takes a great deal of research to identify all duplicate issues on large and dynamic websites. Deal with it – before the engines do! ! !

3 Mikkel deMib Svendsen www.joyzone.dk www.redzoneglobal.dk mikkel@joyzone.dk Duplicate Content & Multiple Site Issue Mikkel deMib Svendsen www.demib.com www.redzoneglobal.dk mikkel@redzoneglobal.dk With and/or without WWW http://yourdomain.com http://www.yourdomain.com Indexing issues? Most engines seems to be able to handle common use of both www and not www Linking issues? Yes, direct links is always the best! Solution: Redirect one-to-one From: http://yourdomain.com/directory-name/filename.html To: http://www.yourdomain.com/directory-name/filename.html

4 Mikkel deMib Svendsen www.joyzone.dk www.redzoneglobal.dk mikkel@joyzone.dk Duplicate Content & Multiple Site Issue Mikkel deMib Svendsen www.demib.com www.redzoneglobal.dk mikkel@redzoneglobal.dk The nightmare of session IDs Almost 200,000 versions of the same page indexed! Solution: Dump all session information in a cookie for all users – or identify spiders and strip the session ID for them only. In any case: Deal with it! www.google.com/support/webmasters/bin/answer.py?answer=35769

5 Mikkel deMib Svendsen www.joyzone.dk www.redzoneglobal.dk mikkel@joyzone.dk Duplicate Content & Multiple Site Issue Mikkel deMib Svendsen www.demib.com www.redzoneglobal.dk mikkel@redzoneglobal.dk Customize Permalink Structure

6 Mikkel deMib Svendsen www.joyzone.dk www.redzoneglobal.dk mikkel@joyzone.dk Duplicate Content & Multiple Site Issue Mikkel deMib Svendsen www.demib.com www.redzoneglobal.dk mikkel@redzoneglobal.dk Rewriting not blocking Rewritten URL: http://www.demib.dk/google-noodp-287.html Original URL: http://www.demib.dk/?p=287 As default both will be accessible! Both pages are 100% identical Indexing & Linking Solution: 301 redirect all requests to “non-official” URLs to the correct (re-written) URL

7 Mikkel deMib Svendsen www.joyzone.dk www.redzoneglobal.dk mikkel@joyzone.dk Duplicate Content & Multiple Site Issue Mikkel deMib Svendsen www.demib.com www.redzoneglobal.dk mikkel@redzoneglobal.dk One WordPress Canonical URL plugin http://isaacschlueter.com/plugins/i-made/cannonical-url/ Tool: www.seoconsultants.com/tools/headers.asp #1 Server Response: http://www.demib.dk/?p=287 HTTP Status Code: HTTP/1.1 301: Moved Permanently Date: Sun, 16 Jul 2006 11:50:46 GMT Server: Apache/2.0.55 (Win32) PHP/5.1.2 X-Powered-By: PHP/5.1.2 X-Pingback: http://www.demib.dk/xmlrpc.php Status: 200 OK Location: http://www.demib.dk/google-noodp-287.html Content-Length: 268 Connection: close Content-Type: text/html; charset=UTF-8 Redirect Target: http://www.demib.dk/google-noodp-287.html #2 Server Response: http://www.demib.dk/google-noodp-287.html HTTP Status Code: HTTP/1.1 200 OK Date: Sun, 16 Jul 2006 11:50:47 GMT Server: Apache/2.0.55 (Win32) PHP/5.1.2 X-Powered-By: PHP/5.1.2 X-Pingback: http://www.demib.dk/xmlrpc.php Status: 200 OK Connection: close Content-Type: text/html; charset=UTF-8

8 Mikkel deMib Svendsen www.joyzone.dk www.redzoneglobal.dk mikkel@joyzone.dk Duplicate Content & Multiple Site Issue Mikkel deMib Svendsen www.demib.com www.redzoneglobal.dk mikkel@redzoneglobal.dk Many-to-one in forums Indeks solution? In this case they have used a POST form, that engines do not (currently) execute. Also, the “Rate This” form is on this forum is only available to logged in users. Both URLs are accessible by all (including spiders) Linking solution? None! (apparently) Suggestion: Check for major bots and 301 redirect all URL’s with the “pp=“ parameter or “page=1” value to the default URL for the page http://forums.searchenginewatch.com/showthread.php?t=9331 http://forums.searchenginewatch.com/showthread.php?t=9331&page=1&pp=20

9 Mikkel deMib Svendsen www.joyzone.dk www.redzoneglobal.dk mikkel@joyzone.dk Duplicate Content & Multiple Site Issue Mikkel deMib Svendsen www.demib.com www.redzoneglobal.dk mikkel@redzoneglobal.dk Sort Order Parameters Sort by Col 1: Publisher (desc/asc) Col 2: Site (desc/asc) Col 3: Unique visitors (desc/asc) Col 4: % +/- (desc/asc) Col 5: Visitors (desc/asc) Col 6: % +/- (desc/asc) ALL VERSIONS INDEXED! Indexing & Linking Solution: Identify spiders and issue a 301 for all “non- official” URLs back to the default URL

10 Mikkel deMib Svendsen www.joyzone.dk www.redzoneglobal.dk mikkel@joyzone.dk Duplicate Content & Multiple Site Issue Mikkel deMib Svendsen www.demib.com www.redzoneglobal.dk mikkel@redzoneglobal.dk Breadcrumb Navigation Typical breadcrumb Products -> Shoes -> Running Shoes -> Adidas www.domain.com/shoes/runing-shoes/adidas.html Alternative product location Products -> Sports Equipment -> Shoes -> Adidas www.domain.com/sports-equipment/shoes/adidas.html If your breadcrumb navigation is reflected in your URLs you may have a problem! ! ! Indexing & Linking Solution: Pages should only have one location! Store user navigation paths/breadcrumbs in a cookie

11 Mikkel deMib Svendsen www.joyzone.dk www.redzoneglobal.dk mikkel@joyzone.dk Duplicate Content & Multiple Site Issue Mikkel deMib Svendsen www.demib.com www.redzoneglobal.dk mikkel@redzoneglobal.dk Remember! There are infinite ways to create multiple URLs to a single page. Whatever you do, don’t leave it to the engines to deal with! ! !

12 Mikkel deMib Svendsen www.joyzone.dk www.redzoneglobal.dk mikkel@joyzone.dk Duplicate Content & Multiple Site Issue Mikkel deMib Svendsen www.demib.com www.redzoneglobal.dk mikkel@redzoneglobal.dk Thank you! Mikkel deMib Svendsen Creative Director, deMib.com & RedZoneGlobal Denmark Director of European Business Development, WebmasterRadio.FM Contact: mikkel@RedZoneGlobal.dkmikkel@RedZoneGlobal.dk – (+45) 22 27 07 10 And remember … You don't have to be genius to be a Geek! Tune into StrikePoint At WebMasterRadio.FM (FREE!) DaveN & Mikkel deMib Svendsen - only European SEO radio show! Monday at 21:00 (Central Europe Time)