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I agree with this, but who is to say what a brand name is and is not? This is why I believe they are using something which words are generic and non-generic which then determines if you have an EMD or a brand. Who is to say there can't be a brand/company/etc... say... called 'FloridaHouses' and uses 'floridahouses.com'... would this site no longer show for the search term 'florida houses' eventhough this is in fact a brand in this example?
@tigger the only one I lost was recent and only has a single link from a very relevant source.
@BeeDeeDubbleU: This is probably true but from what we are reading in here it was not only low quality sites that were shot down.
@mh_and I personally seen a site with a following format domain tomsbluewidgets.com, that stands out among its competitors with its content and links, hit by this update and another site that is bluewidets.com has 1 page content, 3 incoming links and was ranking nowhere for blue widgets now is in top 10.
The algorithm takes a look at other signals to judge quality before determining whether or not to knock it down. Like tedster said, not all EMDs were targeted, only low-quality ones.
I think most of us can safely determine a low vs good fairly well these days and have a good grasp on it.
A Mathematical Model for Assessing Page Quality
Behavioral score of page – How people perceive a page is a big indicator of the quality of the page. This can be measured by analyzing the user behavior. Some of the factors that are traditionally used are –
1. Conversion score
2. Bounce rate
3. Number of page views
4. Number of repeat visitors to this page
5. How many people add products to cart after visiting this page?
6. Average amount of time that is spend on this page.
Do you really think people are speaking to the quality of their site without taking into account, bounce rate, conversion, page views, time on site/page, repeat visitors and social?