indyank - 4:59 pm on Nov 16, 2012 (gmt 0)
They may not drop a site's rankings for this alone, but I can buy it being a factor.
They might apply it indirectly too.
I had a page on "Blue Widgets", a very long page in that.
First, congratulations on the increased traffic.
Did you split the long page into smaller articles or created newer articles on topics that were closely related but still not covered in the long article?
Did you also "nofollow" the links to those new articles on the main "Blue widgets" page, in addition to adding "noindex" to those individual smaller articles?
Has traffic increased to this particular page or the whole site?