Recommend reading this article about del.ic.ious getting blacklisted by Google. This is very recent. So, consider this news when using bit.ly internal links in blog posts. Even though the links are going to result pages, this could be problematic for an as yet undetermined period of time (basically bit.ly has two issues to deal with - migration away from their .us domain plus vulnerabilities that make it possible for trojans and scripting elements to be used). Of course, if you're not receiving alerts then the issue is reframed.

http://www.wordfence.com/blog/2014/10/a-malicious-del-icio-us/

As stated, "Delicious has changed hands several times over the years and recently was re-sold earlier this year to Science Inc. They also rebranded several years ago to delicious.com which is not blacklisted, but there are likely a large number of legacy .us links out there. [Edit: Thanks Kelson]"

According to the KEI definition, the best keywords are those that have many searches and that don’t have much competition in the search results. A low KEI is therefore preferable.

I agree with Brian Ostergaard at http://keeyword.com/keyword-effectiveness-index-kei-2/ who says: the KEI makes no statement about the quality of the competition. "While there might only be a few competitors in the search results, these competitors could be big players with big SEO teams and thousands of back links."

The most important tool for SEOs are the tools they are comfortable with -- they may stick with or move away from certain tools over time.

You ask a great question because tools have arguably evolved in sophistication and ease of use from the early days of SEO when KEI and similar tools were the predominant tools. Taking a close look at the analytical tools available in Moz.com you find the important aspects covered -- keyword analysis, on-page, link and competitor analysis, analytics and social. In Moz, you can dig deeper very easily to investigate why a keyword is not appearing higher in search engine page ranking. Simply click on an icon and you're there.

So, again great question. My advice -- don't abandon what's working -- search and use additional tools that work for you and your company or clients. And one type of analysis such as KEI should not be relied upon entirely. Keep improving and evolving as new tools and techniques get added to Moz. If you're using other tools, do the same.

Keep those questions coming -- this is a great community for dialogue and the most insightful answers to a variety of different types of questions.

Yes, currently unsupported according to help source document on the subject. I believe it's an area of SEO that justifies separate scoring. Of course, analytic software would provide its own metrics.

According to the KEI definition, the best keywords are those that have many searches and that don’t have much competition in the search results. A low KEI is therefore preferable.

I agree with Brian Ostergaard at http://keeyword.com/keyword-effectiveness-index-kei-2/ who says: the KEI makes no statement about the quality of the competition. "While there might only be a few competitors in the search results, these competitors could be big players with big SEO teams and thousands of back links."

The most important tool for SEOs are the tools they are comfortable with -- they may stick with or move away from certain tools over time.

You ask a great question because tools have arguably evolved in sophistication and ease of use from the early days of SEO when KEI and similar tools were the predominant tools. Taking a close look at the analytical tools available in Moz.com you find the important aspects covered -- keyword analysis, on-page, link and competitor analysis, analytics and social. In Moz, you can dig deeper very easily to investigate why a keyword is not appearing higher in search engine page ranking. Simply click on an icon and you're there.

So, again great question. My advice -- don't abandon what's working -- search and use additional tools that work for you and your company or clients. And one type of analysis such as KEI should not be relied upon entirely. Keep improving and evolving as new tools and techniques get added to Moz. If you're using other tools, do the same.

Keep those questions coming -- this is a great community for dialogue and the most insightful answers to a variety of different types of questions.