Forums are great for getting more targeted traffic to your website, landing page or offer which can lead to more sales and earnings.
One of the keys is to try to be active and/or advertise on forums that are in the same niche as what you are trying to market/promote/sale/etc.
Most forums get a lot of traffic that is there because the people are interested in something they found in a search or whatever so they are interested in that niche. If you have a banner ad that is on a forum in the niche you are targeting as an example, then chances are those people might be interested in what you are advertising.
Even if they just click on your banner advertisement and do not make a purchase you still might get a sale from that visitor later on.
Forums are great for getting more visitors/traffic for your site and some people will actually underestimate their effectiveness. Don't be one of those people.
