Google said Thursday that it had made a major change to its algorithm in an effort to improve the rankings of high-quality Web sites in its search results — and to reduce the visibility of low-quality sites. While the company did not say so explicitly, the change appears to be directed in part at so-called content farms like eHow and Answerbag, that generate articles based on popular search queries so they will rise to the top of the rankings and attract clicks.
While the content on these sites can be useful, much of it is closer in value to the eHow article on making friends in college, which includes tips like “consider joining a sorority or fraternity” and “remember to have a good time, smile and laugh.” Many of the articles on these sites are phrased as how-tos, and even after Thursday’s change they still show up as top results in searches for how to do something — if someone phrases a search query that way, they might want to read such an article. In the blog post, Google said the updated algorithm rewards high-quality sites, so the effect will become clear over time.
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