Zero Google Page Rank for Component Vendors

There are a number of distinct sections for topics on the web site. One section just lists manufacturers or vendors in alphabetic order. Because it's a section consisting of about 100 pages, I track it.

Back in June of 2008 I posted a listing of all the pages with in the section that had a zero Google Page Rank: Page Rank and Listing of Manufacturers. Guess I'm checking again.... I really see no improvement in the component pages yet.
Page hits have fallen by 50% from Jan. 2007. But the Bounce rate as decreased by 50% as well [which is a good think]. Of course the 'A' components page gets the most hits, followed by the page that covers 'D' vendors, and so on.

Component Manufacturers with no Page Rank:
Equipment Manufacturers, Ae [A2].
Equipment Manufacturers, Amd [A4].
Equipment Manufacturers, Ap [Ap].
Equipment Manufacturers, Ar [A6].
Equipment Manufacturers, Asq [A7].
Equipment Manufacturers, Av [A8].
Equipment Manufacturers, Be [Be].
Equipment Manufacturers, Bi [B1].
Equipment Manufacturers, Bl [Bl].
Equipment Manufacturers, Br [B2].
Equipment Manufacturers, Cm [C3].
Equipment Manufacturers, Con [C4].
Equipment Manufacturers, Cp [C5].
Equipment Manufacturers, Dem [D1].
Equipment Manufacturers, E.
Equipment Manufacturers, Ec [Ec].
Equipment Manufacturers, El [E1].
Equipment Manufacturers, Em [E2].
Equipment Manufacturers, Ev [E4].
Equipment Manufacturers, Em [F1].
Equipment Manufacturers, Ga [G].
Equipment Manufacturers, Ge [Gen].
Equipment Manufacturers, Gi [G1].

I stop checking all but the main page for each letter. But I don't see any rank for any of these pages listed below.

Equipment Manufacturers, H.
Equipment Manufacturers, J.
Equipment Manufacturers, K.
Equipment Manufacturers, L.
Equipment Manufacturers, N.
Equipment Manufacturers, O.
Equipment Manufacturers, P.
Equipment Manufacturers, Q.
Equipment Manufacturers, R.
Equipment Manufacturers, S.
Equipment Manufacturers, U.
Equipment Manufacturers, V.
Equipment Manufacturers, X.
Equipment Manufacturers, Y.
Equipment Manufacturers, Z.

So many of these pages were just updated. So any bad links have been removed and replaced with just a text listing. I've also been adding text to indicate the date a company was acquired by another manufacturer. Why are these pages lacking any page ranking.

So this listing will provide yet another link to the pages that require a ranking. More external links mean a page rank? Maybe the number of links on each page are bleeding page rank, but what would be the point with out the links.

Any way, the updates over the last few months have not been picked up by any search engine yet.
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Resistor Manufacturers

As part of interfacebus, I've had a page covering Manufacturers of Resistors on the web for about ten years now. The page covering Resistors is well established after 10 years on the internet

The Resistor vendors page grows in size or reduces as links are added or removed. The other day four 'redundant' manufacturers were removed from the listing as they all pointed to the company that acquired them. Normally I'll leave a reference to a company that was purchased so people can still find the new company, but after awhile the old link gets removed.

From the "What's New blog" I see a new page dealing with Current Sense Resistors was added in April 2008. Adding a related page to resistors means removing all references to Current Sense Resistors from the main Resistor listing, so that they only show up on the new page, other wise both pages would appear to cover the same topic. Of course removing any information relating to current sense resistors reduces the amount of text from on the main resistor page.

April 2008 also saw a number of new pages that related to Resistors but did not require information being drained off the main resistor page. The new pages provided more incoming links [external pages linking to] the Resistor Manufacturers page. Incoming links should help a page gain visits by providing additional ways to find a page topic. How ever at the same time similar topics on the same web site could end up dividing the traffic between all related topics.

The point is I see a reduction in visits to the Resistor Manufacturers page over the last few years. Page views in 2006 seemed flat, but appeared to start decreasing from 2007 on. Page visits look stable from July 2008 on but are down 60 percent.