I have a site that averages about 10,000 unique visitors per day (anywhere from 7k to 15k depending on the day of the week or the time of the year, but about 10k unique visits on average).
It is NOT a forum, if that matters. It's pretty much just articles about one specific subject.
It currently earns revenue through Adsense. There is one ad unit at the top of each article, and another at the bottom (longer articles have another in the middle somewhere).
However, above every article in the header of the site (at the top of everything else) is the logo. To the right of the logo is space for a 468x60 banner ad.
This space is currently not used. I've tried some affiliate banner stuff there before, but it didn't really earn much. Adsense didn't do so great there either (especially compared to how it does in the spots I currently have Adsense in).
I'm kind of running out of ideas, but I'm beginning to think some form of CPM advertising might work best in this spot.
So, I guess what I'm wondering is, does CPM seem like my best option here? And, if so, what are the best/most recommended CPM networks?
Thanks in advance for any help.