Quote:
A lot of folks think that Supplemental Index is a bad thing because pages relegated to the supplemental index do not drive traffic.
I believe the supplemental index is almost wholly pages with non-unique text, and Google’s motivation for creating another index for that has more to do with filtering (devaluing) links from those pages than it is with keeping those pages out of their search results pages.
|
http://www.internet-marketing-blog.c...e2%80%99-heel/
You
do not want links from pages which consist of duplicate content. Article directories are duplicate content factories.