Just comment on Commentluv and Intensedebate
Comment on High pagerank sites
Comment on Forums
Comment on Gov plus Edu sites
Submit your blog to directories
Share on each and every social network.. through which you can get lots of backlinks and Google will better rank your site

1. Link exchanges
2. Participating in blog networks
3. Widget backlinks
4. Advertorials
5. Paid links that pass PageRank
6. Article directories
7. Low distribution of anchor text
8. Backlinks from foreign language websites
9. Any link intended to manipulate PageRank

These are some effective ways to get quality back links with free traffic..

1 - Start guest blogging and choose top blogs in your niche.
2 - Go for social media sharing and increase followers and friends in your networks.
3 - For quality backlinks use any list of high pr instant approval directory for submission of your websites.
4 - List your websites in ultiple search engines.

Hi,
Share your blog on high PR sites and on Social media. Increase followers of your blog which definitely help you to get good traffic on your blog.

First of all, you should find blogs similar to your niche and comment on them, forums as well (with your link in the sig, don't spam!), use social media for traffic as well and do some guest posting, that always works!