谷歌竞价推广和FB推广：何时在链接上使用Nofollow标签？SEO专家指南
Nofollow标签的起源与发展
Nofollow于2005年推出，最初是为了应对博客垃圾评论问题。SEO专业人士曾试图通过这个标签来操纵Google的PageRank算法。 如今，这个标签已经演变为搜索引擎优化中的重要工具。
What is Nofollow?
Nofollow is a rel attribute that tells search engines not to endorse the linked page. Originally used in meta tags, it's now commonly applied to individual links.
Nofollow的工作原理
Google建议："当其他值不适用时，请使用nofollow值。这表示您不希望Google将您的网站与链接目标关联。"
How Nofollow Works
Google recommends: "Use nofollow when other values don't apply, indicating you don't want Google to associate your site with the linked target."
2020年重大更新：Nofollow成为提示而非指令
2020年3月，Google宣布将nofollow属性视为提示而非指令。这意味着Google可能会忽略您的nofollow偏好。
2020 Update: Nofollow as a Hint
In March 2020, Google announced treating nofollow as a hint rather than directive, meaning it might ignore your nofollow preference.
三种重要的rel属性
- rel="sponsored"：用于付费内容或链接
- rel="ugc"：用于用户生成内容
- rel="nofollow"：当上述两种不适用时
Three Important rel Attributes
- rel="sponsored": For paid content or links
- rel="ugc": For user-generated content
- rel="nofollow": When the above don't apply
何时使用Nofollow？
- 付费链接和广告
- 用户生成内容中的链接
- 您不认可的第三方内容
When to Use Nofollow?
- Paid links and advertisements
- Links in user-generated content
- Third-party content you don't endorse
何时不应使用Nofollow？
如果您自愿提供链接并认为这是优质资源，且没有获得任何报酬，则无需使用nofollow。
When Not to Use Nofollow?
If you voluntarily provide a link to a quality resource without compensation, nofollow isn't necessary.
如何检查Nofollow链接？
主流SEO工具如Ahrefs、Majestic和Semrush都能显示nofollow链接数量。您也可以直接检查代码中的rel属性。
How to Check Nofollow Links?
Major SEO tools like Ahrefs, Majestic and Semrush can show nofollow link counts. You can also check the rel attribute in the code directly.
Nofollow链接的价值
虽然nofollow链接可能不会直接提升排名，但它们可以带来有价值的流量，并且是自然链接配置的重要组成部分。
Value of Nofollow Links
While nofollow links may not directly boost rankings, they can drive valuable traffic and are an important part of natural link profiles.
现实应用建议
在以下情况使用dofollow链接：
- 可信的来源
- 真正的客座帖子
- 社交媒体资料链接
Practical Recommendations
Use dofollow links for:
- Trusted sources
- Genuine guest posts
- Social media profile links
结论
合理使用nofollow、sponsored和ugc属性可以帮助您的网站保持健康的链接结构，同时符合搜索引擎的指导原则。
Conclusion
Proper use of nofollow, sponsored and ugc attributes helps maintain a healthy link profile while complying with search engine guidelines.
