仅在针对赞助商链接使用上述属性时，才可能发生用错的情况。如果您将 UGC 链接或非广告链接标记为 sponsored，我们会查看相应提示，但其影响（如有）最多是我们可能不会将当前链接作为对其他网页的权重认可。在这方面，这与许多已标记为 nofollow 的 UGC 和非广告链接当前的情况没有任何不同。
[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["没有我需要的信息","missingTheInformationINeed","thumb-down"],["太复杂/步骤太多","tooComplicatedTooManySteps","thumb-down"],["内容需要更新","outOfDate","thumb-down"],["翻译问题","translationIssue","thumb-down"],["示例/代码问题","samplesCodeIssue","thumb-down"],["其他","otherDown","thumb-down"]],[],[[["\u003cp\u003eGoogle is introducing two new link attributes, \u003ccode\u003erel="sponsored"\u003c/code\u003e and \u003ccode\u003erel="ugc"\u003c/code\u003e, to provide webmasters with more ways to identify the nature of links for Google Search.\u003c/p\u003e\n"],["\u003cp\u003eAll link attributes (\u003ccode\u003esponsored\u003c/code\u003e, \u003ccode\u003eugc\u003c/code\u003e, and \u003ccode\u003enofollow\u003c/code\u003e) are now treated as hints by Google's search algorithms, rather than directives, for analyzing and using links.\u003c/p\u003e\n"],["\u003cp\u003eExisting \u003ccode\u003enofollow\u003c/code\u003e links do not need to be changed, but using the new attributes is encouraged for better link analysis and processing by Google.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003enofollow\u003c/code\u003e will transition to being treated as a hint for crawling and indexing purposes starting March 1, 2020, meaning it will no longer reliably block pages from being indexed.\u003c/p\u003e\n"],["\u003cp\u003eGoogle recommends using more robust methods described on their help page for blocking URLs from Google, instead of relying on \u003ccode\u003enofollow\u003c/code\u003e for that purpose.\u003c/p\u003e\n"]]],["Google introduced two new link attributes: `rel=\"sponsored\"` for ads or sponsorships and `rel=\"ugc\"` for user-generated content. Alongside the existing `nofollow`, these attributes now serve as \"hints\" for Google Search's algorithms, influencing how links are analyzed. While `nofollow` will be treated as a hint starting March 1, 2020, existing `nofollow` links don't need to be changed. Using `sponsored` or `nofollow` for ads remains crucial to avoid link scheme penalties. These changes aim to enhance link analysis and understanding of web content.\n"],null,["# Evolving \"nofollow\" – new ways to identify the nature of links\n\nTuesday, September 10, 2019\n\n\nNearly 15 years ago, the [`nofollow`\nattribute](/search/docs/advanced/guidelines/qualify-outbound-links) was [introduced](https://googleblog.blogspot.com/2005/01/preventing-comment-spam.html)\nas a means to help fight comment spam. It also quickly became one of Google's\n[recommended methods](/search/docs/essentials/spam-policies#link-spam)\nfor flagging advertising-related or sponsored links. The web has evolved since nofollow was\nintroduced in 2005 and it's time for nofollow to evolve as well.\n\n\nToday, we're announcing two new link attributes that provide webmasters with additional ways\nto identify to Google Search the nature of particular links. These, along with\n`nofollow`, are summarized below:\n\n- **`rel=\"sponsored\"`:** Use the sponsored attribute to identify links on your site that were created as part of advertisements, sponsorships or other compensation agreements.\n- **`rel=\"ugc\"`:** UGC stands for User Generated Content, and the `ugc` attribute value is recommended for links within user generated content, such as comments and forum posts.\n- **`rel=\"nofollow\"`:** Use this attribute for cases where you want to link to a page but don't want to imply any type of endorsement, including passing along ranking credit to another page.\n\n\nWhen nofollow was introduced, Google would not count any link marked this way as a signal to use\nwithin our\n[search algorithms](https://www.google.com/search/howsearchworks/how-search-works/ranking-results/).\nThis has now changed. All the link attributes---`sponsored`, `ugc`, and\n`nofollow`---are treated as hints about which links to consider or exclude within\nSearch. We'll use these hints---along with other signals---as a way to better understand\nhow to appropriately analyze and use links within our systems.\n\n\nWhy not completely ignore such links, as had been the case with `nofollow`? Links\ncontain valuable information that can help us improve search, such as how the words within links\ndescribe content they point at. Looking at all the links we encounter can also help us better\nunderstand unnatural linking patterns. By shifting to a hint model, we no longer lose this\nimportant information, while still allowing site owners to indicate that some links shouldn't be\ngiven the weight of a first-party endorsement.\n\n\nWe know these new attributes will generate questions, so here's an FAQ that we hope covers most of\nthose.\n\nDo I need to change my existing nofollows?\n------------------------------------------\n\n\nNo. If you use `nofollow` now as a way to block sponsored links, or to signify that you\ndon't vouch for a page you link to, that will continue to be supported. There's absolutely no need\nto change any `nofollow` links that you already have.\n\nCan I use more than one `rel` value on a link?\n----------------------------------------------\n\n\nYes, you can use more than one `rel` value on a link. For example,\n`rel=\"ugc sponsored\"` is a perfectly valid attribute which hints that the link came\nfrom user-generated content and is sponsored. It's also valid to use `nofollow` with\nthe new attributes---such as `rel=\"nofollow ugc\"`---if you wish to be\nbackwards-compatible with services that don't support the new attributes.\n\nIf I use `nofollow` for ads or sponsored links, do I need to change those?\n--------------------------------------------------------------------------\n\n\nNo. You can keep using `nofollow` as a\n[method](/search/docs/essentials/spam-policies#link-spam)\nfor flagging such links to avoid possible link scheme penalties. You don't need to change any\nexisting markup. If you have systems that append this to new links, they can continue to do so.\nHowever, we recommend switching over to `rel=\"sponsored\"` if or when it is convenient.\n\nDo I still need to flag ad or sponsored links?\n----------------------------------------------\n\n\nYes. If you want to avoid a possible [link\nscheme action](/search/docs/essentials/spam-policies#link-spam), use `rel=\"sponsored\"` or `rel=\"nofollow\"` to flag these\nlinks. We prefer the use of `sponsored`, but either is fine and will be treated the\nsame, for this purpose.\n\nWhat happens if I use the wrong attribute on a link?\n----------------------------------------------------\n\n\nThere's no wrong attribute except in the case of sponsored links. If you flag a UGC link or a\nnon-ad link as `sponsored`, we'll see that hint but the impact---if any at\nall---would be at most that we might not count the link as a credit for another page. In this\nregard, it's no different than the status quo of many UGC and non-ad links already marked as\n`nofollow`.\n\n\nIt is an issue going the opposite way. Any link that is clearly an ad or sponsored should use\n`sponsored` or `nofollow`, as described above. Using `sponsored`\nis preferred, but `nofollow` is acceptable.\n\nWhy should I bother using any of these new attributes?\n------------------------------------------------------\n\n\nUsing the new attributes allows us to better process links for analysis of the web. That can\ninclude your own content, if people who link to you make use of these attributes.\n\nWon't changing to a \"hint\" approach encourage link spam in comments and UGC content?\n------------------------------------------------------------------------------------\n\n\nMany sites that allow third-parties to contribute to content already deter link spam in a variety\nof ways, including moderation tools that can be integrated into many blogging platforms and human\nreview. The link attributes of `ugc` and `nofollow` will continue to be a\nfurther deterrent. In most cases, the move to a hint model won't change the nature of how we treat\nsuch links. We'll generally treat them as we did with `nofollow` before and not\nconsider them for ranking purposes. We will still continue to carefully assess how to use links\nwithin Search, just as we always have and as we've had to do for situations where no attributions\nwere provided.\n\nWhen do these attributes and changes go into effect?\n----------------------------------------------------\n\n\nAll the link attributes, `sponsored`, `ugc`, and `nofollow`, now\nwork today as hints for us to incorporate for ranking purposes. For crawling and indexing\npurposes, `nofollow` will become a hint as of March 1, 2020. Those depending on\nnofollow solely to block a page from being indexed (which was never recommended) should use one of\nthe much more robust mechanisms listed on our\n[Learn how to block URLs from Google](/search/docs/crawling-indexing/control-what-you-share)\nhelp page.\n\n\nPosted by [Danny Sullivan](https://mastodon.social/@searchliaison) and\n[Gary Illyes](https://garyillyes.com/+)"]]
