I had something like this today..I had 31 clicks on the same ad unit and I earn under 2$!! For 31 clicks! Not fair..
If it makes you feel better 15 click for $0.51..... something is up today... and usually I have a few firefox downloads.... and at least a dozen clicks for it and today that is at ZERO.... which is a bit strange as well...
It looks like you have a lot of Ads. More Ads tend to mean less money. I limit most pages to just one Ad.
Same problem here today.. yesterday I had made $3.40 for 5 clicks (yes 5 clicks!) today I've had 4 clicks and made a total of .18, WTH!
Seems like this is becoming more common...for the past week or so I've had clicks but zero earnings. dunno why. figured its not worth tearing my hair out over a few cents
Something is odd....One of my sites today had 41 clicks and made a whopping $1.46...While another one of my sites had 34 clicks for $14.43.
Yesterday i did 8$ for 12 Clicks and today 0.6$ for 8 Clicks. I would say its simply on the ads served and on the ads visitors clicked. May be Luck
My link units consistently offer great clicks every day, my ad units go up and down constantly. The fewer ads I display, the better my CPC is, consistently. I'm considering dropping all ad units by the 234x60 (and just one) in order to get the best contextual display and highest CPC. The link units are my favorite, though.