Also there are the ones that actually get attracted by a site, believe they can make some profit with it, hop in to check it out, even struggle to make some money at times, but are not guided well.. All they get is a list of banners and referral links and the admins let them figure out what to do with them on their own.
This way they end up wasting money and time on poor traffic sources that deliver no results, get frustrated and believe they have been scammed. Then they give up and sometimes they think that this whole industry is a scam. Sure there are many scammers but that's a fact in every industry as well..
In the real world when someone gets a job, they don't expect him to know what to do upfront. The first days at any job basically include training to help him get started, normally by the more experienced staff and only after he knows exactly what to do and how that is profitable for everyone they let him do his work.
I think people should be advertised more that online marketing and working with "get-paid-to" sites, is a different kind of job, but it's still a job. Not a way to make money from thin air. Proper education and training is a requirement, not an optional thing. As is investing.
Something I've also learned from my experience is that this industry needs more teams than lone wolves. Since most of these sites include referring it's much easier to succeed when working as a team. DLF is a good example of that.
If I had joined the site on my own, I might have given up before knowing how easy and profitable it can be compared to many others. If I had to pay for the upgrade for months without profits it would have been disappointing, but since I have a team where we support each other, we did chain-joining like we usually do, so we all gain by altering the order of joining each site. This way we always have at least one experienced and active referral, thus we get to earn quickly in most of the sites we work on and since profits from one site can boost earnings in others we all benefit from anyone's success in any of them.
DLF goes one step beyond that, helping everyone earn even more, with seniority pay.. The way everyone benefits from everyone that joins the site after them is amazing. It makes everyone part of the DLF team!
Now, as for an idea (since the thread is called "Marketing ideas to promote DLF"), I would highly recommend adding a testimonials section to the forum where people can contribute their success stories and motivate new people reading them. The forum is public after all, it does get in Google's search results and can be a great source of information, guidance and motivation for new visitors being introduced to the DLF program itself. It's a handy tool if used right.