by Gareth on August 31, 2011
The majority of link building posts I see focus on acquiring new links, but what about your existing links? Once you have a strong link profile, this needs to be monitored and consolidated. You don’t want your best links to drop off. This post looks at ‘link decay’ also know as ‘web decay and ‘link rot’.
What is link decay
‘Web decay’ in information retrieval science refers to the loss of pages from the Internet. Back in 2006 Bill Slawski blogged about a patent that looked at link decay, where web pages were found to disappear from the web at a rate of 0.5% per week.

Worldwidewebsize calculates total pages on the Internet at 19.64 Billion, while SEOmoz say the average page has 13.32 external links on it. By my calculations that’s 1.3 Billion links being wiped out each week!
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by Tad Chef on September 28, 2011

This is a guest post from Tad Chef (Onreact), you can check out more of his blogging on SEO 2.0 and over at SEOptimise.
Over the years Google has maintained that inbound links can’t hurt your site yet many webmasters get notified via Google Webmaster Tools of “unnatural links” when they get penalized. What are unnatural links and how can you spot them? Aren’t all links great? How to prevent an epic link building FAIL?
The bad news: Not all links are created equal, some of them are evil. The good news: We know how the evil links look and we can spot them. There are even tools which assist you with this task.
As we all know good natural links grow on trees, so to say.
As on the Web there are no trees, unless in games like Farmville, you have to grow your organic links on websites. Unlike organic food sadly websites do not have clear badges proving that a site has certified organic links. Some sites may boast they have such links but you have to check and find out yourself whether it’s true.
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