Hey, i get what you mean in terms of the too professional look, i see you're going for more of a casual, successful average joe's site.. okay in that case you just need to reorganize the front page and an intro video will DEFINITELY help A LOT...
the first impression i got when i opened the site was... confused, where do i go, what's it for... the first thing i ended up clicking on was "show me the money" and it definitely didn't look like the first page you want people to see, as it even took ME a few seconds to realize what you're doing there... an avg user would have probably closed the site at that point... i went back and clicked on the learn more section, which i thought was a great copy, very rich in content and will lead to good conversions... so you need to make it the FIRST page ALL of your new users click on
About the specific job sites, their tos will vary, so just make sure to read what's a NO NO for them that leads in removal of ads and avoid it... also I think it would help you A LOT to get one of those free internet phone numbers where you record a voicemail... it will seem a whole lot more legit and a lot of non internet savvy people prefer calling rather than emailing, so u could nicely tell them that if they're calling about an income opportunity to go to the site