you get the quality backlink for a website than work in high page rank and only work in dofollow. all off page work is quality..

Web 2.0 Blog creation & posting, Document sharing can be a great way to get backlinks from high PR sites.

if you want to get quality back links then always try to link your site from high PR sites ans relevant sites. it always give good traffic which are useful for your site. when you do forum posting/ bookmark/article/blog always try to post unique and quality content it always useful for your site.

search related blogs and comment ;)

1.Forum Commenting
2.social Bookmarking
3. Blog Commenting
4. Article submission

7 ways to get quality backlinks for your blog/website.

Article marketing
Social Networking Site Profile
Press Release
Link Exchange
Document Sharing Sites
Guest Blogging
Blog Commenting

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