Its obviously Guest posting.

Getting DoFollow Links by Guest Posting.

Link building techniques:
Directory submission
Guest posting
Forum posting
Blog commenting
Content marketing

[DELETED]

Link building techniques can be done by following:
Forum commenting
Blog commenting
Guest posting
Article submission

Most useful techniques for link building is
Forum posting and commenting,
Blog post and Commenting,
Social Book marking,
Business Listing,
Article Submission

Forum Posting,
Guest posting
Blog commenting
Social bookmarking
Directory submissions.. etc

[DELETED]

High DA & PA Social bookmarking, forum posting, directories, guest blogging is a best way for link building method.

There are various types of link building techniques but which one is best that is most important to know. Well do follow links are better whether you create do follow link by blog commenting, guest posting or forum posting... just consider to build do follow links.

Follow below techniques for Backlinks

Directory Submission
Article Submission
Press Release Submission
Guest Posting

The Backlinks (Social Bookmarking , Forum Link Building , Forum Posting , Free Directory Submission, Web 2.0, Social profile creation etc) Is that good.

I'm not against with Guest Posting but it has a bad record in Google in which the guest bloggers are submitting tons of content that are intending to manipulate the rankings. One of the big names were penalized.