I have a site that, after a year, ranks in the top five for a couple decent student loan consolidation keywords. It's just got adsense on it now, which is usually good for a buck and a half a click, but I'd rather throw something on there that might by chance make a bit more. I don't update the site anymore, but if it's going to sit, I'd rather make $20 a lead than $2.00 a click.