How to Know Duplicate Content and Supplemental Index?
There are two types of duplicate content: inter-site and external. When Your site goes into supplemental index, it’s looses it’s ranking instantly as it means Google doesn’t consider it as important content this will be much less likely to display it in the search results. What this means for Your AdSense earning is bye-bye traffic, hence no earnings on the previous level. If You have traffic coming form other sources, e.g. Articles, that’s great, but the chances are that a lot of Your traffic Will be from Google. If You do experience this type of activity, don’t panic, But Take Action right away. Later on I will talk about what You can do.
Inter-site duplicate content is when Google fins that Your pages on the same domain are so similar to each other that they get done by the duplicate content filter. This happens when You have a lot of navigation everywhere and little content. It is likely to happen e-commerce sites more, as there content is often just a description and graphics and buttons all over the place (carts, purchase etc). To AdSense sites this happens rarely and the chances of it happening are very slim. To check for duplicate content on Your site, go to Google and type site:yoursite.com, replacing your URL with em.. Your url. It will give You a list of pages it has indexed and You will see the pages that are in the S.I.
External duplicate content is content that is the same on different domains. It can be caused by a press release or an article that has being stolen from You and re-distributed by someone else. This is more likely for You to happen and also can be dealt with, although, if You have a lot of pages, can be cumbersome. This type if duplicate content takes longer for the search engines to find because they have so many data centers and they need to update them all and trade information with one another.
In order to eliminate duplicate content or to avoid it, here is what You can do:
For inter-site duplicate content, You can take all the navigation out and look at how much content You have left. If it’s less than 30%, increase it. Some of the navigation can also be made into graphics, so that search engines would not consider it as duplicate. This can be done with non-keyword content, such as shopping cart, print this page etc. If You look close enough, You are bound to find few of those words You can make into graphics.
For external duplicate content, You need to first find out where it is. For this purpose it is easy to use copyscape. What You need to do is copy the usl of the page which You have in the supplemental index and enter it on their site. It will give You all the pages on the internet that it found having the same content. You can then go to their web site, do a whose search, and contact them. Since Your site have the copyright word at the bottom, You have full rights to that content, hence You can make them delete it. If You purchase the CopyScape logo, I believe they can do it for Your. That way You will protect Your site and the next time an update is done You will hopefully be removed from the S.I.
If You leave Your pages in S.I., You will soon find Yourself extinct from Google and receive no traffic from it. This happens a lot to the “black-hatters”, hence they have a name for it, which is “black death”, I believe. This is when Your site slowly looses all pages out of the index and cache and received no traffic at all. I don’t recommend waiting until Your site reaches that state.
Tags: duplicate content filter, supplemental index, google, what this means, search engines, trade information, fins, earnings, press release, traffic
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