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I'm getting emails from Channeladvisor recommending I join, thereby taking advantage of a change to Google Shopping. It is starting in Australia from today (13Feb13). Is it an upgraded version of Google  Adwords, or another form of a Commerce Merchant (obviously with multiple channels,e.g. Ebay, Amazon etc)? With Adwords, I found it too expensive for the type of product we sell (printer cartridges). But the real question is, DO MY RANKINGS DROP FROM NOT USING CHANNEL ADVISOR?

Currently, my Website, according to the Crawl Diagnostics Summary, has 401 'Duplicate Page Title Errors'. But in Google Webmaster Tools, under Óptimization on the Left hand Side Toolbar, if you look up HTML Improvements, there are only 4 'Duplicate Title Tags'. I have two questions re this: A) Do 'Duplicate Page Title Errors' and 'Duplicate  Title Tags' have the same meaning' ? , and B) why are there 401 errors located by the former, and just 4  by the latter?

Reading through the SEOmoz threads, and also other forums, I can't help but notice that the majority of material covered is about SEO & SERP, white hat & black hat linking, social media blogs and articles, etc, etc. Everyone trying to scramble to the top of their market via Google. If Google brought out a release saying that hopping down the street naked & having a neighbour googling that you had, for improved SERP ratings, would produce a weird downtown scenario. What I am asking, is this: Does Google have too much power in determining to the world what is correct and what is not as a corporation. And are they and what they have a passing phase, or will they lose their dominance like Microsoft etc through technical change?