I've applied to a couple advertising companies, and I haven't heard back from any of them yet. How long do these guys take to respond generally? Do they sometimes not respond at all?
Also, I have really lowpaying keywords and I'm getting less than 10 dollars a day with adsense even though I have more than 1.5 million pageviews a month. What am I doing wrong? Maybe I need a CPM solution instead of CPC?