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The Verge shows how Google search is useless
(www.theverge.com)
This is a most excellent place for technology news and articles.
To be fair when Google solved SEO spam in 1999, thanks to pagerank, it was no small feat. The others were bad not because they abused ads but because they didn't know how to deal with cheating webmasters.
Why can't someone replicate old Google pagerank?
Pagerank worked first, but SEO adapted since with link farming.