Good post by Ashwin, which brings to light a couple of issues that we’re constantly dealing with as SEO’s.
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I feel it important, however to point out one possibly dangerous flaw. His first statement regarding Meta tags not being a must.
He is correct in his explanation that for SEOs title, description and especially keywords do not have a huge impact on rankings (SERPs) but they do a bit, and it’s important when you do use them that you use them properly!
So what’s my big ‘issue’? It’s just this.. SEO may not rely upon meta tags vitally, BUT the title tag and description are required, they are part of the page, and vitally needed for usability and accessibility within any website.
So use them, use them properly, form them well, just don’t freak out about them from an SEO stand point.