There are a lot of sites which provide you the option of guest posting. You can grab this option to increase the amount of links over your website along with building a good rapport with other bloggers.
Blog commenting refers to leaving a comment on other blog posts which gives a back link to your website. Hence the more comments you leave the more people will have your link.
There are various article submission sites where you can easily submit good quality article. Thus, you will get good traffic along with quality link for your site.
There are many forums which allow you to include your link in the signature area. Forum posting is the easiest way to get sufficient amount of traffic from the search engine results.
Various social networking sites give you the opportunity to connect with people having common interests on the web. If you have a business blog or website, then people over social media platforms can easily come to know via posting the links over Facebook wall, through the tweet at Twitter or from the circles on Google + etc.
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Personal Reputation Management