As I had read the latest google algorithm, the best and working strategies for offpage optimization are:
1: Local Business Directories: you should put all the website information such us:
* Phone #
* website email
* exact address with zip code
* Contact details
* unique website summary description
2: Article posting: Post unique article(500+ words) to all Top 15 High Pr Web 2.0 Properties with links in the content 1 directly to money site and the second is to related news for some news.google.com or wickepedia news.
I hope this will help you a lot as I am sharing mine
..Goodluck!