[[["わかりやすい","easyToUnderstand","thumb-up"],["問題の解決に役立った","solvedMyProblem","thumb-up"],["その他","otherUp","thumb-up"]],[["必要な情報がない","missingTheInformationINeed","thumb-down"],["複雑すぎる / 手順が多すぎる","tooComplicatedTooManySteps","thumb-down"],["最新ではない","outOfDate","thumb-down"],["翻訳に関する問題","translationIssue","thumb-down"],["サンプル / コードに問題がある","samplesCodeIssue","thumb-down"],["その他","otherDown","thumb-down"]],["最終更新日 2012-04-01 UTC。"],[[["\u003cp\u003eGoogle is launching an algorithm change to target webspam and promote high-quality content.\u003c/p\u003e\n"],["\u003cp\u003eThis change decreases rankings for sites violating Google's quality guidelines by using black hat SEO tactics like keyword stuffing and unnatural link schemes.\u003c/p\u003e\n"],["\u003cp\u003eThe algorithm change affects about 3.1% of English queries and a higher percentage in languages with more webspam.\u003c/p\u003e\n"],["\u003cp\u003eGoogle encourages webmasters to focus on creating high-quality sites with a good user experience and ethical SEO practices.\u003c/p\u003e\n"],["\u003cp\u003eThis update aims to reward websites providing valuable content and a positive user experience, rather than those manipulating search rankings.\u003c/p\u003e\n"]]],["Google is launching an algorithm change to combat webspam, decreasing rankings for sites violating quality guidelines. This update targets manipulative tactics like keyword stuffing and link schemes, aiming to improve user experience and reward high-quality content. The algorithm change affects approximately 3.1% of English queries, with a higher impact on heavily-spammed languages. The goal is to prioritize sites that focus on creating compelling content and employing ethical SEO rather than webspam.\n"],null,["# Another step to reward high-quality sites\n\nTuesday, April 24, 2012\n\n\nGoogle has said before that search engine optimization, or SEO, can be\n[positive and constructive](https://www.youtube.com/watch?v=BS75vhGO-kk)\n---and we're\n[not the only ones](https://www.bing.com/community/site_blogs/b/webmaster/archive/2012/03/23/does-bing-like-seo-you-bet-your-ahrefs-we-do.aspx).\nEffective search engine optimization can make a site more crawlable and make individual pages\nmore accessible and easier to find. Search engine optimization includes things as simple as\nkeyword research to ensure that the right words are on the page, not just industry jargon that\nnormal people will never type.\n\n\nEthical search engine optimization, also known as \"white hat SEO\", often improves the usability\nof a site, helps create great content, or makes sites faster, which is good for both users and\nsearch engines. Good search engine optimization can also mean good marketing: thinking about\ncreative ways to make a site more compelling, which can help with search engines as well as\nsocial media. The net result of making a great site is often greater awareness of that site on\nthe web, which can translate into more people linking to or visiting a site.\n\n\nThe opposite of ethical SEO is something called \"black hat webspam\", or simply webspam (we say\n\"webspam\" to distinguish it from email spam). In the pursuit of higher rankings or traffic, a\nfew sites use techniques that don't benefit users, where the intent is to look for shortcuts\nor loopholes that would rank pages higher than they deserve to be ranked. We see all sorts of\nwebspam techniques every day, from\n[keyword stuffing](/search/docs/advanced/guidelines/irrelevant-keywords) to\n[link schemes](/search/docs/essentials/spam-policies#link-spam) that attempt to\npropel sites higher in rankings.\n\n\nThe goal of many of our ranking changes is to help searchers find sites that provide a great\nuser experience and fulfill their information needs. We also want the people making great\nsites for users, not just algorithms, to see their effort rewarded. To that end we've launched\n[Panda changes](https://googleblog.blogspot.com/2011/02/finding-more-high-quality-sites-in.html)\nthat successfully\n[returned higher-quality sites in search results](https://www.newscientist.com/article/mg21228436.200-inside-search-engines-war-on-bad-results).\nAnd earlier this year we launched a\n[page layout algorithm](https://insidesearch.blogspot.com/2012/01/page-layout-algorithm-improvement)\nthat reduces rankings for sites that don't make much content available \"above the fold.\"\n\n\nIn the next few days, we're launching an important algorithm change targeted at webspam. The\nchange will decrease rankings for sites that we believe are violating Google's existing\n[quality guidelines](/search/docs/advanced/guidelines/overview#quality).\nWe've always targeted webspam in our rankings, and this algorithm represents another\nimprovement in our efforts to reduce webspam and promote high quality content. While we can't\ndivulge specific signals because we don't want to give people a way to game our search results\nand worsen the experience for users, our advice for webmasters is to focus on\n[creating high quality sites](/search/blog/2011/05/more-guidance-on-building-high-quality)\nthat create a good user experience and employ ethical SEO methods instead of engaging in\naggressive webspam tactics.\n\n\nHere's an example of a webspam tactic like keyword stuffing taken from a site that will be\naffected by this change:\n\n\nOf course, most sites affected by this change aren't so blatant. Here's an example of a site\nwith unusual linking patterns that is also affected by this change. Notice that if you try to\nread the text aloud you'll discover that the outgoing links are completely unrelated to the\nactual content, and in fact the page text has been \"spun\" beyond recognition:\n\n\nSites affected by this change might not be easily recognizable as spamming without deep\nanalysis or expertise, but the common thread is that these sites are doing much more than\nethical SEO; we believe they are engaging in webspam tactics to manipulate search engine\nrankings.\n\n\nThe change will go live for all languages at the same time. For context, the initial Panda\nchange affected about 12% of queries to a significant degree; this algorithm affects about\n3.1% of queries in English to a degree that a regular user might notice. The change affects\nroughly 3% of queries in languages such as German, Chinese, and Arabic, but the impact is\nhigher in more heavily-spammed languages. For example, 5% of Polish queries change to a degree\nthat a regular user might notice.\n\n\nWe want people doing ethical search engine optimization (or even no search engine optimization\nat all) so they can focus on creating amazing, compelling web sites. As always, we'll keep\nour ears open for feedback on ways to iterate and improve our ranking algorithms toward that\ngoal.\n\n\nPosted by\n[Matt Cutts](https://www.mattcutts.com/blog/),\nDistinguished Engineer"]]
