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花招

Author: 唐生. Published: March 17, 2005. Category: (28)
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最近搜索时发觉有一类结果事完全没有用的,类似通过一个搜索页面搜索到另一个搜索引擎的结果,用户不得不再从这堆结果里筛选有用的信息来进行"二次发掘",从效率的角度来讲这种结果占据结果的靠前位置,把真正有用信息置于不受关注的靠后位置,是低效的,违反搜索引擎初衷.

这种花招叫做"喂狗"(feeding the dogs),在"喂狗"的场景中,"作弊"站点有一可识别搜索引擎与用户的程序,当"蜘蛛"(spider)"抓取"(claw)页面时,它可以把一个它希望见到的网页"喂"比搜索引擎,像一条贪婪的狗,吞食着食物时丝毫没有注意到它只是在吃"狗骨头"的仿制品.接下来应该"正确"(对骗rank网站来讲)的做法时当实际用户点击站点时,用户不会被"喂食",而是获得实际站点,但目前见到的例子是索性将"喂狗"页面显示出来,玩弄用户.

区分搜索引擎同实际用户不是困难的事情,因为搜索引擎来自固定的IP和会发出预先约定好的字头(例如:msnbot|Googlebot|Yahoo! Slurp),只要"喂狗器"检测到来访者同一般浏览器的区别,就可以投出不同的内容.

解决方法:
1.搜索引擎不考虑动态生成页面(=____=b...)
2.不通知站点它是搜索引擎(道高一尺魔高一丈)
3.提供索引指引比用户,由用户决定搜索结果是否提供了与搜索引擎无关的东西(狗骨头),即系投诉

有句名言:不要一味地为吸引搜索引擎设计网页,毕竟网页最终是为用户设计的.



Posted by 唐生 at March 17, 2005 6:42 PM | TrackBack (0)

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