Should You Really Spin Articles? Google's Normal Index And Supplemental Index

[Boris_yo]

I heard that duplicate content penalty applies only if your domain has similar content across multiple pages. There is also duplicate content penalty in SERPs - supplemental index. This is what i want to talk about.

When spinning articles, most of them will be indexed and placed in normal index. But what if we don't spin them and submit? Most of them will be indexed, however they will be placed in supplemental index.

Question:

Do backlinks on webpages that are in normal index have higher weight than backlinks on webpages placed in supplemental index?

[paulgl]

That's one terrific question.

Since the supplemental index is a non-regular index, it stands
to reason the stuff on it would be de-valued.

But it's not really de-valued. It's just in the back room. Seems
to me that if a site is in the supplemental index, it's still indexed.
It's just stuff that google thinks should not be put on display. But
if someone searches for something that can only be found in the
supplemental, it brings it out.

But the problem would be PR. The PR of pages in the supplemental
index would be very, very low, if not n/a.

So the links would be links on pages with no PR, counting for zip.

Paul

[Boris_yo]

Originally Posted by paulgl

But the problem would be PR. The PR of pages in the supplemental
index would be very, very low, if not n/a.

Normal index or supplemental, this does not matter here, because no matter what article you submitted - spinned or duplicate, new pages get created in article directories - pages with no PR.

If you submitted spun article to 1000s of article directories, you will get a lot of results in normal index and all these pages will have no PR. If you submitted duplicate article to 1000s of directories, you will get few results in normal index and the rest of results will end up in supplemental index and they will also have no PR.

Or you just wanted to say that supplemental index always will have pages with no PR? If similar pages end up in both normal and supplemental index and all have same good PR, will they all end up in normal index because of good PR even though they are all duplicate?