Whats are some best way to build some backlinks ?

[Vinil]

thanks for the list .but i feel that all above this works PPC.My experience says i was doing SEO but as the projects got associated  by PPC,Its ranking enhances .No ds or article do this work

[hjones]

The best links to get are free, natural organic links. Since that takes a lot of time, there are a lot of great white hat techniques you can use. Directories are ok as long as they are relevant, human edited and don't include stuff like escort services and online gambling. Syndicating press releases through places like prweb are also great link building tactics. Guest posting on blogs. Promote any useful content you have through social media to promote people to link to you. You can also do giveaways for bloggers, product samples for bloggers, and sponsoring organizations. Just don't fall for those 100 links in a week for $20 scams. All those scams will do is submit your site to link farms and sites full of scraped content. These types of services will only get you penalized by search engines.

[Ken Peterson]

Effective way to build backlinks is through creating a relevant lens on squidoo lens. If your site is about Social Media, you can create a lens about Google Plus, Facebook, Twitter and other topics related to social networking sites.

[outsourcefirm]

The search engines are providing more weight to content-centric internet sites such as web 2.0 features where there is a lot of discussion and new content is consistently being present. it's good to exercise blogs, social search for posting, wetpaint contact etc. the value of links from these locations is much better from internet internet directories, composing and article marketing internet sites and forums.

[andrewjohn]

Link building is the most important technique is used in the SEO to get backlinks.
social bookmarking,directory submission,article submission,forum posting and blog posting are the very good way to get back lins and increase your website traffic.

[AddisonTorres3047]

You can start with social bookmarking. Get a good SEO Toolkit, like Dino Browser for example. It already contains fresh lists of social directories and supports automatic registrations. A few dozens of fast backlinks are guaranteed.