TheOptimizationIdiot - 3:05 am on Apr 28, 2013 (gmt 0)
The theory is that penalties would not flow through a page that is not in the index.
Not sure where that theory came from, but it's incorrect.
How can it be link manipulation when links are pointed to a page that you have removed from their index.
Because pages "noindexed" still pass link weight, but pages that are removed from a site (no longer exist) via 404 Not Found or 410 Gone and do not link to other pages do not.
That's why I recommended a custom 410 Gone page with noindex,nofollow and relevant links for visitors who happen to find the page.