SEO - link popularity

link popularity is a factor which most search engines used to rank your website.
Google has pagerank, if there is a lot of websites linking to your website, you will have a higher pagerank in google and thus rank higher in the search result.

There are several ways you can archive this:

1. write to administrators of high ranking websites and ask them to place your link into their link section. Probably you will place their link to your own website in exchange.
2. leave comments with your website link on pubic forums or blogs~~
3. write articles and submit to e-publishers