Article Submission
Blog Post Submission
Blog Commenting
Forum Submission
Guest Blog Submission

Most use off page techniques:-

Social bookmarking
Blog commenting
Forum posting
Directory submission
PDF submission
Classifieds ads

nice and awesome article
Happy birthday cake pictures
Happy birthday cake photos

There is some technique are

Social bookmarking
Directory submission
Blog commenting
Forum posting
Article submission

The Most Use Off page Techniques are:
Micro Blogging
Forum Posting
Guest Posting
Blog Commenting
QnA
Social Bookmarking
Article Submission
Directory Submission
Video Submission
Image Backlinking
Local Listings

These are few effective off-page SEO techniques -


Social bookmarking.
Forum posting.
QnA.
Article submission.
Video creation & submission.
Web 2.0.
Press release.
Info-graphics creation & submission.
Blog posting.

1. Social bookmarking
2. Blog commenting
3. Image sharing
4. Content sharing
5. Profile creation

Most use Off page Techniques are:
Micro Blogging
Forum Posting
Guest posting
Blog Commenting
Article Submission
Directory Submission
Social Bookmarking
QnA
Local Listings
Social Media

Top SEO Off page Techniques are-
Article Submission
Blog Commenting
Forum Posting
Guest Blogging
PDF submission
PPT submission

Most useful techniques for off page SEO:

1. Press Release
2. Link wheel creation
3. Use of Question & Answers
5. Wiki Submission
6. Directory Submission
7. Social Networking
9. Article
10. Forum
11. Blog Commenting
12. Blog Posting
13. Web page creation
14. Social Bookmarking

i think, guest post is one of the best techniques to increase the high quality link.

thanks for sharing!