What about AdBrite

I received one cheque from AdBrite the end of last month. The payment is for one 300 x 250 pixel Medium Rectangle ad inserted in each individual post of this Blog.
The return is so bad. And the payment above is for all earning until October 27. They use net-60 payment:

Net-60 means earnings must mature for at least 60 days before being eligible to be paid out. In other words, 60 days after we get paid by the advertiser, the publisher gets paid.

Just show you the cheque.
adbrite-cheque

My suggestion is that you can choose it, but nor relay on it.
If you do not have other program to earn some Blog money, or you have some space on your Blog, you can try it.