What I'm doing wrong?

[miki]

After almost 1 year of submitting I still can't make more then $200 per month... it's scary... isn't it?
I have few sites: www.hotgirlsonnet.com (PR3), www.girlsexxxposed.com(PR1), www.babescamlive.com(was3, now2),
www.dollsforus.com, www.shemalexxxposed.com, www.worldfamousass.com but on only first two I host my TGP galls. I have bunch of free PA and few paid PA. One gall per day (sometime two), even on weekends. My niches are teen, babes, amateur, group, hardcore...
I'm working with topbucks and teendolls mostly... don't want to spread my work on to many sponsors and loose effect... I think this sponsors are really good but my visit statistic is bad! 10k-15k daily on major site is bad. What the f.ck I'm doing wrong?!?
I'm using CS and Rsubmiter for link dump.
Ones a month I submit domains to free submitters for search engines...(for better PR)
BTW is there anyone who try paid spots on main TGP sites ($400-$2000/month)??? does it worth it? Don't tell me: see yourself... I'm ready to pay $500 if I'll get even $10 extra...
I really want to know what is your expirience with it?
Any suggestion is welcome... thanks