Searchenginegenie.com

Latest off page SEO techniques are:
Directory Submission will continue to die
Off Page contents such as external blogging will play a crucial part in SEO
Forum Participation might increase
No follow will not be ignored
Ping backs will become more important than links.

I think, Now a days, Classified posting, blog comment, forum posting are most for off page SEO.

Some useful Idea according to me

Keep content fresh and valuable

Post to Social Media frequently

Add new pages

guest posting and forum posting

Here are some of the list of latest off page techniques in SEO:
Blogging
Directory submission
blog and forum comments
creating profile on social networking sites
business listing
social bookmarking

Latest off page techniques:
Blog commenting
Forum postings
Infographics submission
Unique content submission
Review posting