Help for more traffic

Hi All !
I have started mobile phone forum and looking to promote it and need to get some quality contents from the real users of the forum.
I have added some links to sister sites but Only getting user signups, not the quality content from them. Is there any better idea how I can achieve my goal ?
My forum can be found here: http://www.mobilestore.pk/forum

there are two solution's for your problem.

1. Do everything yourself.

2. Hire someone to do it for you (seo,smm etc)

let me know if you need any paid help i charge monthly and provide reports.cheers

I think its really a time taking and really very tough task.