Forum posting is not an extra ordinary job.In this job you have to do normal posting as you do in forums and you get paid for doing that.
It’s a very good job so that you need not to have any technical knowledge.Simple you can write 20-25 words and make a single post.
You may get paid up to 3$ for 10-15 posts.This may include up to 50% new threads.Generally payment is between 1 to 2$
You can earn enough money at end of day.
How to start the job?
Go to webmaster forums like digital point.There you will find people asking for forum posters. OR you can offer your own service to them by creating a new topic about it with complete details.
Why do people hire?
People hire because you are going to create lots of keywords for the employer.It will generate a lot traffic to him from search engines.Your one time work will give him life time income.