The most important factor in SEO is Back links. You want successful SEO campaign?? Do it by building high quality back links and Page rank it's will boost and also help with your Search Engine Position.
Webmaster can create back links for a website by using the following techniques:
1. Creating blogs.
2. Classifieds Posting
3. Three way links.
4. Reciprocal Links.
5. Articles directory submission.
6. Blog Comment Posting.
7. General article site posting.
8. Create Wiki links.
9. Forums.
10. Using Social Networking to increase traffic.
11. Putting free usable information on site like tools.
12. Creating video of site to video submission.
13. Google Local business submission.
14. Press Release Posting.
15. Paid directory link.
16. Paid site link.
17. Banner paid ad.
Good luck