Leaps of faith
Have faith in things that are free. Just because it is free does not mean dismiss it as junk.. I have spent more money on junk. So just because you pay for something does not make it worth the money you spent for it. I am using free ad boards and forums to post my ads...With success!! These are available to you 100% FREE! So why do we spend countless dollars placing ads on networks that have tons of click fraud? Start using free services!
Ahh...Yes...Back link building is essential to a up and coming business or website that needs eyes to view! When you post your ads in forums and ad boards you are getting a back link to your website! Forums are indexed quickly, due to new content daily and lots of visitors!
Just because its free does not mean it is junk.. Look a little closer it may be useful. :)