As above, depends what niche your site is in, using ppc on keywords on the 4-5 bar companies would cost due to the high cpc. If you have a site then sign up for something in that niche. If you are looking for just something to advertise then it could be a number of companies, i have Capital One, major credit card company, massive competition. Lead commissions are good, i have an education one pulling off pretty good lead to click ratio It doesnt take too long, go through all the cj companies reading their details, and a tip, look at the new companies and get in quick!