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nofollow標(biāo)簽的作用有重大變化

2019年9月10日，Google官方博客表示，nofollow屬性將不再僅代表拒絕傳遞權(quán)重，而將拓展為三種屬性：rel="sponsored"、rel="ugc"、rel="nofollow"。 1. rel=”sponsored” 該屬性用于標(biāo)示被廣告贊助的鏈接，例如廣告合作，展示商標(biāo)，贊助商鏈接等。它是告訴搜索引擎，鏈接是被廣告商贊助，而非獨(dú)立推薦。 2. rel=”ugc” 該屬性用于標(biāo)示用戶生成內(nèi)容鏈接，例如在論壇、留言板、評論區(qū)等網(wǎng)頁上由用戶生成的鏈接。這些鏈接通常是用戶分享的、自發(fā)的，并沒有被主機(jī)站點(diǎn)以編輯或創(chuàng)作形式控制。對于這些鏈接，搜索引擎希望以更為寬松的標(biāo)準(zhǔn)來評估這些鏈接的權(quán)重。 3. rel=”nofollow” 該屬性用于標(biāo)示不希望被該頁面關(guān)聯(lián)的鏈接的權(quán)重傳遞給被鏈接的網(wǎng)頁。通常情況下，該屬性會用于標(biāo)示低質(zhì)量、垃圾、以及互相連接的網(wǎng)頁，當(dāng)然也可以用于標(biāo)示商務(wù)合作的無意義鏈接。總之，nofollow標(biāo)簽是為了防止網(wǎng)站主在回復(fù)評論和發(fā)布廣告等方面進(jìn)行黑帽SEO操作，給搜索引擎帶來不良反向鏈接的質(zhì)量，增加了關(guān)注垃圾鏈接的難度。

Public @ 2023-04-26 02:50:15

創(chuàng)建Sitemap時(shí)有哪些注意事項(xiàng)？

第一，一個(gè)Sitemap文件包含的網(wǎng)址不得超過 5 萬個(gè)，且文件大小不得超過 10 MB。如果您的Sitemap超過了這些限值，請將其拆分為幾個(gè)小的Sitemap。這些限制條件有助于確保您的網(wǎng)絡(luò)服務(wù)器不會因提供大文件而超載。第二，一個(gè)站點(diǎn)支持提交的sitemap文件個(gè)數(shù)必須小于5萬個(gè)，多于5萬個(gè)后會不再處理，并顯示“鏈接數(shù)超”的提示。第三，如果驗(yàn)證了網(wǎng)站的主域，那么Sitemap文件中可包含該網(wǎng)站

Public @ 2009-04-13 16:09:43

301設(shè)置：一定要做的集中權(quán)重的方法

301重定向是一個(gè)常用的SEO技術(shù)，它能把舊的網(wǎng)址自動轉(zhuǎn)向新的網(wǎng)址，使搜索引擎能順暢地找到新的內(nèi)容及其鏈接。301重定向可以有效地保持網(wǎng)站的權(quán)重。以下是一些集中權(quán)重的方法： 1. 將所有舊的網(wǎng)址都重定向到新的網(wǎng)址，這將幫助搜索引擎找到最新和最重要的內(nèi)容。 2. 更新您的Sitemap并提交給搜索引擎，以使它們能夠快速和準(zhǔn)確地索引您的新網(wǎng)址和內(nèi)容。 3. 確保您的內(nèi)部鏈接指向最新的網(wǎng)址，這樣搜

Public @ 2023-04-03 05:00:13

nofollow的定義及如何正確使用nofollow?

什么是nofollow：　　在html標(biāo)簽中，< a > 標(biāo)簽的rel 屬性被用于說明當(dāng)前文檔與被鏈接文檔的關(guān)系。而nofollow則是其中的一種屬性值，其用法示例為：　　< a href="..." rel="nofollow" >...< /a >　　其另一種使用方法，也是最原始的使用方法，是用于網(wǎng)頁的元標(biāo)簽中，告訴搜

Public @ 2019-06-24 16:08:52

Nofollow使用示例

如某博客上有垃圾評論：<a href="URL">頂頂</a>以下操作，即進(jìn)行了 nofollow：<a href="URL" rel="nofollow" >灌水</a>在網(wǎng)頁的 <HEAD> 部分添加適當(dāng)?shù)?<META> 標(biāo)簽。攔截所有搜索引擎把網(wǎng)頁收錄：<

Public @ 2016-11-01 16:08:52

更多您感興趣的搜索

基本文件流程錯(cuò)誤 SQL 調(diào)試

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[ DB ] CONNECT:[ UseTime:0.020495s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.014935s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 7766 LIMIT 1 [ RunTime:0.013837s ]
[ 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:0.014136s ]
[ 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:0.014363s ]
[ 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:0.014415s ]
[ 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` = 7766 LIMIT 1 [ RunTime:0.013763s ]
[ 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=7766 [ RunTime:0.016447s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海網(wǎng)站結(jié)構(gòu)優(yōu)化' AND `status` <> -1 LIMIT 1 [ RunTime:0.023083s ]
[ 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` = '威海網(wǎng)站結(jié)構(gòu)優(yōu)化' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.033168s ]
[ 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:0.020727s ]
[ 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:0.036498s ]
[ 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', ) ]

0.398077s

Categories

Tags

nofollow標(biāo)簽的作用有重大變化

創(chuàng)建Sitemap時(shí)有哪些注意事項(xiàng)？

301設(shè)置：一定要做的集中權(quán)重的方法

nofollow的定義及如何正確使用nofollow?

Nofollow使用示例

更多您感興趣的搜索

Categories

Tags

nofollow標(biāo)簽的作用有重大變化

創(chuàng)建Sitemap時(shí)有哪些注意事項(xiàng)？

301設(shè)置：一定要做的集中權(quán)重的方法

nofollow的定義及如何正確使用nofollow?

Nofollow使用示例

更多您感興趣的搜索

創(chuàng)建Sitemap時(shí)有哪些注意事項(xiàng)？