Do you believe that you can get paid by someone if you post in forum?
There are two different ways:
1)Forum Poster
-Hire by someone
-Post on specific forum and only you got paid
-Paid by the one hire you, can be advertiser, advertising client or site admin
-Posting value is higher but only you or your team earn
2)Pay To Post
-Not hire by someone
-Register on the forum and everyone posting will got paid
-Paid by the site admin
-Posting...

Off-page optimization (off-page SEO) are strategies for search engine optimization that are done off the pages of a website to maximize its performance in the search engines for target keywords related to the page content.

It involves following activities :
(Mainly involve activities where
you get traffic from and process linking, and placing keywords within
link anchor text)

-Link xchange (One way Link Exchange, Two Way Link Exchange, Three Way Link...