Always. I had been in touch with this industry until 2010 and that was as easy (and profitable) as if it was a feature, intended this way. Later on, as far as I

Always. I had been in touch with this industry until 2010 and that was as easy (and profitable) as if it was a feature, intended this way. Later on, as far as I know, algorithms have changes a couple of times but that didn't change much, just minor inconvenience SEO guys routinely adapt to. If I didn't care about people's jobs and wasn't libertarian I'd say SEO should be outlawed.