Is anyone using this service ? http://www.alternateurl.com/ Their site don't have much information on their clients and what kind of ads they serve.
I used them very shortly. I showed over 300 views without a single click. and then when I did get a click I think the amount was for $.05 --too low IMHO--this was very long ago so you never know now til you try.
This month my CPM with AlternateURL is $.24. Sounds horrible, but I wouldn't make the money otherwise. So if you aren't using anything else for alternate ads, I say go for it.
We use them on a couple of sites. The outcome is similar to yours - just some cents. But we do not get much PSA.