I don't think he is looking for paid traffic . Social bookmarking sites can be really good for bringing a traffic surge
Although the Adsense revenue is low, traffic from stumbling will help your site get additional exposure.
Is PPC not against adsense TOS? Also I have seen adsense on many "paid to" websites. How do they manage to get away?
Do advertise in Radio and Local TV and if possible in the local news paper. Don’t forget to start any give away competition, before ads. It Pulls lot of traffic Cheers
Try submitting to all the search engines you can, have good content, and try to make a reason for your visitors to come back.