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Nofollow

nofollow 是HTML页面中a标签的属性值。这个标签的意义是告诉搜索引擎"不要追踪此网页上的链接或不要追踪此特定链接"。

nofollow是HTML页面中a标签的属性值。它的出现为网站管理员提供了一种方式，即告诉搜索引擎"不要追踪此网页上的链接"或"不要追踪此特定链接"。这个标签的意义是告诉搜索引擎这个链接不是经过作者信任的，所以这个链接不是一个信任票。

nofollow标签是由谷歌领头创新的一个“反垃圾链接”的标签，并被百度、yahoo等各大搜索引擎广泛支持，引用nofollow标签的目的是：用于指示搜索引擎不要追踪（即抓取）网页上的带有nofollow属性的任何出站链接，以减少垃圾链接的分散网站权重！

简单的说就是，如果A网页上有一个链接指向B网页，但A网页给这个链接加上了 rel="nofollow" 标注，则搜索引擎不把A网页计算入B网页的反向链接。搜索引擎看到这个标签就可能减少或完全取消链接的投票权重。

nofollow是HTML的一个属性，用于告诉搜索引擎不要追踪特定的网页链接。可以用于阻止在PR值高的网站上以留言等方式添加链接从而提高自身网站排名的行为，以改善搜索结果的质量，防止垃圾链接的蔓延。网站站长也可对其网页中的付费链接使用nofollow来防止该链接降低搜索排名。对一些重要度低的网页内容使用nofollow，还可以使搜索引擎以不同的优先级别来抓取网页内容。

Public @ 2009-03-10 16:08:53

关于URL组成部分的指南

URL（Uniform Resource Locator）是用于定位和访问互联网资源的字符串。URL由多个组成部分组成，每个组成部分都提供了关于资源的有用信息。以下是URL的组成部分： 1.协议：协议指定了访问资源的规则和方法。常见的协议有HTTP、HTTPS、FTP、SFTP等。例如：http://www.example.com 2.主机名（域名）：主机名指定了要访问资源的服务器的名称。通

Public @ 2023-06-11 16:00:19

搜狗资源平台-Sitemap提交帮助

功能说明提交Sitemap工具可以向搜狗提交网站Sitemap文件，帮助搜狗spider抓取您的网站。目前Sitemap采用邀请制，您可在此工具下选择已验证的站点，并观察站点是否已被邀请。Sitemap提交后，搜狗搜索会根据Sitemap了解网站中的网址及关于每个网址的其他元数据（上次更新的时间、更改的频率等）。注意事项1.sitemap采用邀请制，当您的网站存在原创或不可替代内容或不能被搜狗sp

Public @ 2021-11-12 16:09:46

Nofollow是什么意思

a：使用<nofollow>属性的链接不会被搜索引擎跟踪，更不会给链接传递权重。避免权重不必要的丢失，从而达到权重集中的目的。

Public @ 2018-08-31 16:08:50

nofollow标签：节省权重流失10%

| 什么是nofollow？● HTML页面中a标签的属性值，告诉搜索引擎不要追踪某一个链接。● 为什么设置nofollow标签？● 避免权重的流失| 如何做nofollow标签？● 一些不要权重的页面链接，给加上nofollow● 如：搜索按钮、关于我们、联系我们、更多、点击查看● 以搜外网首页为案例讲解| nofollow与robots.txt区别：● nofollow决定权重分配，robot

Public @ 2009-03-25 16:08:51

更多您感兴趣的搜索

基本文件流程错误 SQL 调试

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[ DB ] CONNECT:[ UseTime:0.021838s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.016316s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 4372 LIMIT 1 [ RunTime:0.014712s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '4', 'ref' => 'const', 'rows' => 1, 'extra' => NULL, ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='cate' order by times desc limit 15 [ RunTime:0.015200s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by times desc limit 100 [ RunTime:0.015342s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by rand() limit 30 [ RunTime:0.015796s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 4372 LIMIT 1 [ RunTime:0.014761s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '4', 'ref' => 'const', 'rows' => 1, 'extra' => NULL, ) ]
[ SQL ] update `ob_article` set views=views+1 where id=4372 [ RunTime:0.016723s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海网站结构优化' AND `status` <> -1 LIMIT 1 [ RunTime:0.022927s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海网站结构优化' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.039409s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海nofollow' AND `status` <> -1 LIMIT 1 [ RunTime:0.021605s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海nofollow' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.032392s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where; Using temporary; Using filesort', ) ]

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