So...
expenses are:
12 domains x 15$ = 180$
Server = 100$
Total: 280$
Income is:
Ads = 30$
Net loss: -250$/year
I would suggest cutting the number of domains for now and to concentrate on 1-3 domains.
For affiliates and CPC ads click here:
DTICash
Everything will be explained. Basically, you'll replace some of your ads with links to them instead and earn from them.
I suggest trying PlugRush traffic trade. You already have an account, so log in it and see how it is handled.
What is your main language?