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Reward hasiblog
Google反垃圾策略说明-哈斯日志
Google反垃圾策略说明
星期三, 一月 19, 2005
Google利用HTML的规则中nofollow attribute的REl描述属性来打击垃圾链接
http://www.w3.org/TR/REC-html40/struct/links.html#adef-rel
例如，在留言本或评论部分出现链接，则默认为是这种的
http://www.blogger.com/
" rel="nofollow">Visit My Page
这种方式可以用来防止Blogs评论的spam,甚至任何能自由贴上链接的地方。W3组织的规则里还有更多的link rel ttribute ，示例：
http://www.blogger.com/
" rel="friend met">Josh
http://www.blogger.com/
" rel="met acquaintance">Kat
http://www.blogger.com/
" rel="co-worker friend met">Mary
Nickhttp://nick.example.com/">Nick>
搜索引擎的spider能识别这些标志/特征，所以搜索引擎在规范信息构建规范化/打击垃圾信息方面有得天独厚的优势。
相关评论：
http://blog.searchenginewatch.com/blog/050117-205100
http://www.bloggercon.org/2005/01/15#a3294
http://blog.searchenginewatch.com/blog/050118-204728
http://www.google.com/googleblog/2005/01/preventing-comment-spam.html
This Written
at 一月 19, 2005 by loverty.
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