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nofollow标签的作用有重大变化

自nofollow标签于2005年推出以来，其作用一直是指示搜索引擎不要追踪链接。这项功能主要用于避免垃圾邮件和链接操纵，因为某些站点会通过在其他站点上发布大量链接来提高其搜索引擎排名。nofollow标签的作用是告诉搜索引擎不要将链接计入其评估算法。然而，随着SEO和数字营销的发展，nofollow标签的作用已经发生了重大变化。现在，nofollow标签不仅能够阻止链接被计入搜索引擎的排名算法，还能够影响搜索引擎对链接目标页面的评估。Google于2019年对nofollow标签进行了更新，引入了三种变体： 1. rel="sponsored"：用于赞助的链接 2. rel="ugc"：用于用户生成内容的链接 3. rel="nofollow"：用于旧有的nofollow标签这些变化的结果是，nofollow标签不再是简单地告诉搜索引擎不要追踪链接，而是提供更具体的信息。这使得数字营销专业人员可以更好地控制其链接策略，从而在SEO和其他数字营销活动中获得更好的效果。

Public @ 2023-06-27 14:00:46

站点地图注意要点

真实有效站点地图的主要目的是方便搜索抓取的，如果地图存在死链或坏链，会影响网站在搜索引擎中网站权重的，所以要仔细检查有无错误的链接地址，提交前通过站长工具，检查网站的链接是否有效。简化站点地图不要出现重复的链接，要采用标准W3C格式的地图文件，布局要简洁，清晰，如果地图是内容式地图，每页不要超过100内容个链接，采用分页的形式，逐一开来。更新建议经常更新站点地图，便于培养搜索爬虫爬行的频率。经常有

Public @ 2016-06-24 16:09:53

将老域名跳转到新域名，是仅首页301就可以了？还是必须所有页面301?

将老域名跳转到新域名，是仅首页301就可以了？还是必须所有页面301?答：必须所有页面301至新域名的相应页面。来源：百度搜索资源平台百度搜索学堂

Public @ 2023-01-01 16:09:06

nofollow标签的作用有重大变化

nofollow标签是一种发送信号给搜索引擎，表明某个链接并没有推荐价值或者仍然需要被确认，从而在搜索引擎收录索引中减少该链接的收录的技术。当引用链接的页面需要降低权重，或者是垃圾链接以及狗仔站点被引用时，采用 rel=”nofollow” 就能限制搜索引擎把这些链接当做收录的对象，达到抑制搜索结果质量下降的目的。

Public @ 2023-02-24 14:24:26

nofollow标签的作用有重大变化

自nofollow标签于2005年推出以来，其作用一直是指示搜索引擎不要追踪链接。这项功能主要用于避免垃圾邮件和链接操纵，因为某些站点会通过在其他站点上发布大量链接来提高其搜索引擎排名。nofollow标签的作用是告诉搜索引擎不要将链接计入其评估算法。然而，随着SEO和数字营销的发展，nofollow标签的作用已经发生了重大变化。现在，nofollow标签不仅能够阻止链接被计入搜索引擎的排名算

Public @ 2023-06-27 14:00:46

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[ DB ] CONNECT:[ UseTime:0.026159s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_config` [ RunTime:0.019246s ]
[ SQL ] SELECT * FROM `ob_config` [ RunTime:0.017632s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_config', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 25, 'extra' => NULL, ) ]
[ SQL ] SHOW COLUMNS FROM `ob_hook` [ RunTime:0.018409s ]
[ SQL ] SELECT `id`,`name`,`addon_list` FROM `ob_hook` [ RunTime:0.017659s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_hook', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 3, 'extra' => NULL, ) ]
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.018483s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 9501 LIMIT 1 [ RunTime:0.017698s ]
[ 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:0.017951s ]
[ 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:0.018145s ]
[ 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:0.018577s ]
[ 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` = 9501 LIMIT 1 [ RunTime:0.017568s ]
[ 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+2 where id=9501 [ RunTime:0.021046s ]
[ 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:0.026680s ]
[ 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:0.038374s ]
[ 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:0.025681s ]
[ 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:0.034364s ]
[ 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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