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什么是關(guān)鍵詞疊加？

什么是關(guān)鍵詞疊加？英文：Keyword stacking 指為了增加關(guān)鍵詞密度，在網(wǎng)頁上大量重復(fù)關(guān)鍵詞的行為。關(guān)鍵詞疊加是SEO初學(xué)者最常犯的錯誤，他們一般在標題標簽、描述標簽、關(guān)鍵詞標簽、圖片的ALT屬性中重復(fù)放入大量關(guān)鍵詞。有時，他們在網(wǎng)頁頁腳部分擺放上幾十個關(guān)鍵詞。關(guān)鍵詞疊加是一種典型的SEO作弊行為，搜索引擎判斷這種作弊行為的算法已經(jīng)相當(dāng)成熟。一旦網(wǎng)頁上出現(xiàn)關(guān)鍵詞疊加現(xiàn)象，一般整個網(wǎng)站會被

Public @ 2016-05-15 16:12:32

基本文件流程錯誤 SQL 調(diào)試

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[ DB ] CONNECT:[ UseTime:0.024034s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.017379s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海關(guān)鍵詞疊加,seo作弊及懲罰' AND `status` <> -1 LIMIT 1 [ RunTime:0.023579s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9562, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海關(guān)鍵詞疊加,seo作弊及懲罰' AND `status` <> -1 ORDER BY create_time desc LIMIT 0,10 [ RunTime:0.024080s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 9562, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='cate' order by times desc limit 15 [ RunTime:0.016525s ]
[ 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:0.016654s ]
[ 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:0.016833s ]
[ 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', ) ]

0.248913s

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什么是關(guān)鍵詞疊加？

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