This technique is considered as their first "bait" for their targeted Internet users. However, you should realize that your on-page optimization efforts will never be enough. So you will need to do some off-page optimization techniques to compliment your on-page SEO. That is inbound linking from top quality sites. What this means is that you need to get other top quality websites to link to your website. Here are some tips on how you can generate links coming into your website from other websites.

Do some article marketing.
Content is indeed considered to be king in the World Wide Web. You can make use of your content to drive traffic into your website and increase your inbound links. Of course, you can also link back to your website through your resource box found of your articles. You can also submit some articles in ezines. This way, your articles can be picked up by publishers and placed in their webpages-with your website's links in them, that use your main keywords as link titles.