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外部链接对SEO的影响

相关性及锚文本

相关性是搜索结果质量的最重要指标。搜索引擎刚出现时，判断页面与关键词的相关性主要以页面上的元素为基础，也就是页面标题、可见文字等。在意义上说，也就是根据页面自己说与什么相关进行判断的。你说这个页面是什么就是什么。后来很多站长用这种行为作弊得到搜索流量，用户来到网站后，用户体验怎么样作弊者就不管了。　看页面自己怎么说的方法很快被证实不可靠，搜索引擎转而看别人怎么说，也就是通过外部链接及锚文字判断相关性。导入链接内容相关性及锚文字成为判断相关性及排名算法最重要的因素之一，尤其是来自其他网站的导入链接。

权重及信任度

外部链接使被链接的页面及整个域名权重提高，信任度增加。外部链接越多，发出链接的网站本身权重越高，说明被链接的页面受更多人的信任和尊重。投向一个页面的权重和信任度，也会累计在整个域名上。　权重是搜索引擎排名中非常重要的因素之一。形成权重中的最重要的因素就是外部链接。如果你的网站有来自权重极高网站的链接，你的网站的权重会有一定的提升，不管网站目标关键词是什么，排名都会有帮助。

Public @ 2009-05-14 16:21:30

新形势下的外链建设

模式，准确的表述是：外链建设模式应当采用多来源渠道，以提高内容质量、优化网站内容结构，扩大网站传播范围，提升网站知名度、持久优化网站质量，不断促进网站排名持续增长。

Public @ 2023-02-24 03:12:10

怎样查询反向链接？

所有做搜索引擎优化的人都肯定要时不时的查询某个网页或某个域名的反向链接，不光是自己的网站，也会查竞争对手的网站。有很多方法可以查反向链接，主要都是通过搜索引擎来查，当然也有一些软件工具自动查询，但也都是向搜索引擎发查询指令。下面对几大搜索引擎的反向链接查询做个比较。GoogleGoogle给出的反向链接数是最没用的，基本上可以忽略。Google自己说这些反向链接数是不准确的，更新的时间表也只有他们

Public @ 2009-12-17 16:19:15

网站增加外链的42个技巧方法附举例

在分享之前，先简单说下反向链接(简称“反链”)与外链其实不是一个意思。怎么说呢，反链更大一些，外链是反链一种。外链你应该知道了吧，就是站外网站导入站内网站的。而反链呢，是指一个页面导向另一个页面。举例：同一个域名下两个不同页面A、B，以及另外一个域名页面C。当B、C页面上都放上了A。那么可以说B、C是A的反链、C是A的外链。理解吧~下面这里讲的增加反链的方法，其实主要是指外链。因为站内的反链，其实

Public @ 2021-01-21 16:21:11

站外优化技巧

站外优化相比于站内优化要简单一些，具体优化方法与技巧如下:1、进行友情链接、外链时，要当心nofollownofollow就是告诉用户“不要追踪此网页上的链接或不要追踪此特定链接”，我们在交换友情链接的时候，如果别人网站加上了nofollow, 就成了单反链接，友链本来是可以相互传递权重的，如加上了nofollow, 就意味着你给他传递权重，他不给你传递权重。所以，我们在交换友链的时候，要看看它的

Public @ 2015-12-23 16:21:10

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基本文件流程错误 SQL 调试

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[ DB ] CONNECT:[ UseTime:0.023592s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_config` [ RunTime:0.017380s ]
[ SQL ] SELECT * FROM `ob_config` [ RunTime:0.015781s ]
[ 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:0.016896s ]
[ SQL ] SELECT `id`,`name`,`addon_list` FROM `ob_hook` [ RunTime:0.015675s ]
[ 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:0.017015s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 5292 LIMIT 1 [ RunTime:0.015822s ]
[ 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:0.016098s ]
[ 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:0.017007s ]
[ 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:0.016466s ]
[ 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` = 5292 LIMIT 1 [ RunTime:0.015773s ]
[ 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=5292 [ RunTime:0.018583s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海外部链接建设' AND `status` <> -1 LIMIT 1 [ RunTime:0.022570s ]
[ 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` = '威海外部链接建设' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.033400s ]
[ 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` = '威海外部链接建设' AND `status` <> -1 LIMIT 1 [ RunTime:0.022458s ]
[ 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` = '威海外部链接建设' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.040967s ]
[ 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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