That’s great if you can make pretty earning with FB. I don’t get much clicks from NN too, but currently my adsense earning improves a lot compare with previous year.
Honestly, I did click Adsense ads before when I was don’t know what is that, but after I had stepped in the website and blogosphere, I had never clicked it anymore unless it was accidentally. I have a construction site which has only 10-20 unique visitor per day, but I do get few clicks from the 10-20 visitor, I think it’s rely on what blog you have developed on and who you target.
Between, I never click on my own ads because it’s against Google’s TOS and I will be get banned if I do that. So, I just leave it naturally because I don’t mind how many click I get.

but Adsense is pure clicks… i mean who would click on ads? lol i’m sure u visit other ppl blog too but have u ever click once other than ur own blog.. hahaha..?

my other site which has adsense has about 1k visit per day.. but click is just in the range of 0.01%… so few…. it makes my site look uglier and the few cent income doesn’t justify it..