任何從外部網頁連接到你網站的連結就是 Backlinks。

說白一點，任何從其他網域的網頁 (hisdomain.com) 連結到你網域的網頁 (yourdomain.com) 的超連結 (hyperlink) 就是 backlinks. Backlinks 可以是從完全不同的網域而來，也可以是從你的子網域 (sub-domain) 而來，因為搜尋器把不同的子網域會當作完全不同的網域。

怎樣找出連到你網頁的 Backlinks 呢？

其實網上已經有很多免費或付費的 backlinks 搜尋工具，我就選幾個我最常用而又免費的 backlinks 搜尋工具給大家參考一下吧

Google Webmaster Tools 網站管理工具

打開 Google Webmaster Tools 網站管理工具裡的 ”連至你網站的連結“ 頁面就會顯示出所有在 Googles 索引中連到你網站的 backlinks。不過不知為什麼當我搜尋 backlinks 打算截圖的時候沒有顯示 backlinks... 是服務器故障嗎？

PageRank is a propriety algorithm developed by Google to determine the usefulness of an individual web page. Ranking scores from 0-9, where 0 being the lowest and 9 being the highest rank.

Characteristics / Implications

PageRank and relevance of these links are to the topical theme the targeted page is about. The algorithm of PageRank is constantly changing.

Background Information

Before Google was created, Yahoo and other search engines index web pages manually -- i.e. if you have a website and if you wish your website to be listed in Yahoo, you will have to submit the web address (URL) to Yahoo, and Yahoo will send someone to take a look at your web page and manually abstract crucial information from your site and list them on their search engine database. In the later years Yahoo and many other major search engines implemented a paid advertisement scheme that lists sponsored listings higher in the search results.

Xplane, a famous information design company, joined force with Economist Magazine to have created this insightful and remarkable video for The Third Annual Media Convergence Forum with latest statistics on various area of media and technology convergence, and audience behavior in this digital world. Naked facts of Media Convergence in 2009... and 25 yrs from now on.

So your business has been doing pretty good. You think it is time to start getting some global attention. You heard that many business succeeded marketing their business online, so you thought it'd be a good idea to buy some Pay-Per-Click (PPC) ads from Google and Yahoo.

Few weeks later you look at the invoice from Google thanking you for your $2,000. You are very excited that the ad campaign has gone so well "successful" that you must have created quite some attention for all these clicks the campaign generated. You are expecting a dozen of enquiry emails or orders sitting in your inbox. You ask your assistant if there is any message for you, "No!" she replied. You start to wonder... is there something wrong with this whole PPC Ad Campaign idea? The fact is, your website may not be ready for PPC.