实践中各种浏览器的约束有什么区别？
解决方法
Meta Description Tag Length: It’s not
the number of words that count. It’s
actually the number of characters
length. Because,Google will cut off
anything more than 155(roughly)
characters. Optimizing for in the
description and try to limit its
length to 25-30 words. Also try to use
no more than two sentences.
取自http://online-seo-information.blogspot.com/2009/01/meta-description-tag-length-examples.html
