I have just two, I was wondering how many people had and how much they were earning overall with the amount of sites they have with adsense on. Jake.
I have three small sites running the same Adsense account. I pull in $100 every two months. It's just for my personal sites, nothing major.
Four of my blogs have Adsense on them. My earnings are erratic. Sometimes I get $100 a month. There are also cases when that amount is reached after 2 months.
you should focus on a single site or blog until you make it a star, and then move to the second or third. This is a proven advice.
I have 3 right now! One that ranks 2nd in google for a pretty good keyword. I earn about $50 a month when the going is good!
I have 5 sites working with adsense and pulling in roughly 500$ per month Working on more though and also diversifying