大家都知道PR值漏损问题，链接质量漏损问题好像很少有人提及。有一个似乎是很合理也很容易理解的原则，就是一个页面上的链接越多，每个链接的质量就越低，如果你有一个来自这个页面的反向链接，那么你从中得到的好处也越低。
我看到有个英文帖子明确支持了这种观点，具体如下。
a webpage will distribute its rating (notice i didnt say PR) to all the pages its linking to. For example, a site will benefit more if it is the only site that a high rating page is linking to, as compared to if the site is one of hundreds being linked to by the page.