Hi,
Which Strategy is worth for link building?
Social Bookmarking
Classified ads
Relevant business listing
Web 2.0 Submission
I think On-Page and Off-page SEO techniques are worth for link building.
Guest post
Web 2.0 submission
Social Bookmarking
Classified ad
Blog comment
Forum submission
Go for forum posting and blog commenting.
And hey link building will only be effective if you are done optimizing your page.
Classified ads
Video Submission
Business listing
Web 2.0 Submission
Guest posting is the best and most reliable at all. Blog commenting and forum posting are not for link building. They are just good for brand exposure. As if even they gave do-follow links they are basically of no value.
Social Bookmarking
Relevant business listing
Web 2.0 Submission
There are so many off page techniques used by an SEO to rank their website in the search engine. Some of them are Social bookmarking, Forums Posting, PPT / PDF Creation // Submissions, Image /Infographics Creation & Submission, Guest Posting, Social Signals, Microblogging, Blog Commenting.