You can build many incoming links to your site by commenting on other people’s blogs. You need to start with a blog search by going to http://search.blogger.com or http://www.icerocket.com. After you found the blog in your niche, you should save it in your favorites so you can visit often.
Look around for a question that you will be able to answer. Don’t post a comment that will seem like an advertisement or it might be considered blog spam the blog owner will delete it. The key is to provide good feedback while providing the link back to your site. You should always offer helpful advice.
This method will pay off in the long run. The search engines and people will find your links. Be consistent and make a few comments every day.