A backlink is link from another website coming into your own website. Backlinks contribute to the PageRank (PR) of your website. A backlink must include your main keyword phrase (kp) in the anchor text. This means creating a link with the words of your main kp e.g. Dallas Car Insurance rather than using the web address as a link or even "Click Here" or "Visit Us".
Backlinks only help to boost rankings if they are from high ranking, high quality websites, in other words websites with a high PR. Ranked out of 10 websites with PR 4 and upwards are worthy sites. Websites with lower PRs are good but more backlinks from this type of websites are needed to equal a website with a high PR. You can check PR by downloading the Google Toolbar.
You can post a backlink in business directories, local directories, social networking sites and other blogs.
Here are some directories where you can post your link for free.
- Local Google
- Local Yahoo
- Local Bing
- Yellow Pages - PR 8/10
- Super Pages
- Local.com - PR 7/10
Read about inbound links straight from the horse's mouth (Google).
Read more about What PageRank Means for Your Website.