Yahoo! has consistently paid me better than AdSense for the site that I am currently using it on. Because of this, I expanded it a couple of days ago to be the primary ad network for the whole site, as opposed to the smaller portion I was using to test.
The earnings for the few days past that were quite good, but today I came home and WOW! I've not had a day this high in a LOOOONNNG time. In fact, today's earnings so far (and there's about 5 earning hours left in the day, assuming earnings end at the same time Google's do) are at my 3rd highest day EVER. That alone is incredible because my averages for the past few months have been roughly half what they were vs the Jan-April averages.
So, we'll see if this stays consistently, and if so then I'm one HAPPY camper.