按：转自国外的一个搜索引擎网站，讲Page Rank 和 Link Rank，觉得说的很有新意，现在没时间翻译，有时间了可能翻一下。
Do you own a website? Would you like to know how much it cost for an advertiser to place a link on your website. First of all you need to understand what page rank and link rank are. Usually page rank and link rank are measured from a score of 1 to 10.
In order to have a high page rank you need to have many quality links pointing to your website. It is a good idea to have many links pointing to your website but in order to get a good page rank you need quality links. Google doesn’t shows backward links from pages having PR value lesser than 3. Google has recently stopped displaying all backward links it knows. Webmasters have two general opinions upon those links, which are now displayed as backward links: 1. Google randomly shows backward links. 2. Google shows that backward links, which are considered relevant for this page (relevant means that a page, which contains a link to your site is somehow related to yours in subject (content)).
So which is more important, page rank or link rank. Page rank and link rank are equally important. Google care more about page rank than link rank, while Yahoo & MSN care more about link rank. From my experience I find it is easier to obtain a higher link rank than page rank. I am a webmaster of TDJOBS.net and I realize that obtaining a link rank score of 7 is not hard at all. It can be done by creating many subdomains for the site. For example, TDJOBS.net has more than 200 subdomains and each subdomains represent a separate site. Each site has at least 1 or 2 links pointing back to the main site. So how do you get about 338000 links pointing back to your site. The solution is simple, create a huge site that serve mostly dynamic pages but make sure you direct the crawlers to index all of your pages. You can take a look at TDJOBS.net website by going to http://www.tdjobs.net and you’ll get an idea of what I am talking about. So getting a link rank score of 7 is easy? The answer is yes, you do not have to trade link with other webmasters at all. How long do you have to wait to get 338000 links pointing to your website? If you do what I do, 3 months is the longest you have to wait.