For building back-links continuously work on

1. Forum Posting
2. Directory Submission
3. Social Bookmarking
4. Link Exchange

some fast approval directories.

Have you tried social networking sites? Its a good way to increase traffic to your site.

I think social media optimization is one of the best method to get quality back links.

Press Releases
Testimonials
Social Bookmarks
RSS Directories
Article Submissions
Link Bait

Focus on quality of links not just quantiy

If you want back-link do off page activity like social bookmarking, directry, article etc. Always prefer high PR(page rank) website to do submission.

ways to get fast links
Press Releases
Testimonials
Social Bookmarks
RSS Directories
Article Submissions
Link Bait

Backlinks are very important to the success of any website and as such any way by which you can build them is welcomed. The greater the number of backlinks a page has, the more its popularity increases. The easiest way to build backlinks is to offer good quality content on your website, as this will encourage websites with similar themes as yours, to include your website in their backlinks. or you can also buy them from sites like SEOclerks. listingdock etc.

you can Try Bookmarking Demon Software For Faster Bookmarking.

forumposting , blog comenting

Blog commenting, forum posting, social bookmarking etc. is the fastest way to get backlinks but these techniques are against google's guidelines and already considered as link scheme.

forum posting

SEO and SMO both are way to generate traffic on site

social media sites and face book.