Seriously though, look at how you could improve the usability of the site. I have numerous comments for you to assist. Sticky me if you want some honest feedback.
I think there is a lot of interne potential still for your line of work but it seems that PPC is taking over as the preferred route for a lot of advertisers, so maybe you have to decide if you going to follow or try something different.
I'd look to try to get in bed with some of the finance houses to get preferred supplier status or something like that.
Hope that helps and good luck.