URL Keywords impact your site's ranking

A couple of days ago and a peer-seo discussion around three questions under the following url in the words of the strategy

1. Add keywords in url, OK?
2. Will the search engine read the keyword in url?
3. Url add keyword rank helpful improving?

First of all, let's see 2 big major search engines to presenting the attitude of the keyword in url

google：

Matt Cutts release one video among blog of him once, come, explain google the attitude of the keyword appeared to url specially. He say keyword of url very young to help that website rank, you needn't go, pay close attention to url order that the keyword appear, and, must not too many keywords appear in one url.

Yahoo:

Done a great deal in search, we are in the Yahoo March 26 this year to apply for the "Techniques for Tokenizing URLs" Yahoo has found relevant information.

This patent of Yahoo indicates, Yahoo will judge the content of a webpage from a lot of respects, certainly, the majority is to draw keywords from the page content, thus judge the webpage content. But Yahoo will come to judge the page content from url.

So,can getting clearer very think,add by keyword at url,for lasting website the ranks in Yahoo valid! After understanding search engine to the attitude of the keyword in url, we can have to new url optimizing us: Add the goal keyword in url appropriately, only use a keyword of one url, use and scribe between the keywords _ Or - separate.