I will say Bookmarking and Article Submission are not good anymore. Why? Because anyone can have these links in minutes. More hard is to get one link, more value in the eyes of search engines.

Off-Page Search Engine Optimisation

1. Social Networking Sites

2. Blogging

3. Blog Marketing

4. Forum Marketing

5. Search Engine Submission

6. Directory Submission

7. Social Bookmarking

8. Link Baiting

9. Photo Sharing

10. Video Marketing

11. Business Reviews

12. Local Listings

13. Article Submission

14. Social Shopping Network

15. Answer Questions

Best method for Off-Page SEO.

Guest blogging

Forum posting in relevant forum

Social bookmarking

Yahoo answer

Blog Commenting

social bookmarking

yahoo answer

Social Networking Sites

2. Blogging

3. Blog Marketing

4. Forum Marketing

You can try guest blog and content marketing

are you trying to make more visits for your website via asking questions with your backlink?