Back then sharing SEO information acted like a meritocracy. If you had something fantastic to share & it worked great you were rewarded. Sure you gave away some of your competitive advantage by sharing it publicly, but you would get links and mentions and recommendations.

These days most of the best minds in SEO don’t blog often. And some of the authors who frequently publish literally everywhere are a series of ghostwriters.

Further, most of the sharing has shifted to channels like Twitter, where the half-life of the share is maybe a couple hours.

Yet if you share something which causes search engineers to change their relevancy algorithms in response the half-life of that algorithm shift can last years or maybe even decades. http://www.abc.com