Just because 200 ohter sites use them doesn't make them legal. True, nobody knows for usre if they are illegal or not. True, having those pics will get you more clicks. True, it may be possible that it is just feeding surfers lookign for child porn. But do I give a shit ? FALSE. If in fact it turns out to be CP all hell will let loose, thats 200 less tgp's pushing those thumbs that will not exists anymore. And as far as I'm concerned, the less places for pedo's to get off the better and safer the world will be for 13 year old girls. Weather the pics are legal or not is not the issue for that last statement, moreso, proffiting from pedo's using yoru these "young" lookign pics to fullfill or build on their fantasies.
Putting the legality of the sites and pics aside, can you actualy stomach the fact that Mr 45 Year Old Closet Pedo Sr. is out looking for underage girls on the net to wank off, only to find your site (and 200 more the same) and increse his sex drive for young girls and possibly commiting an offence the next time (or if mid jerk) he see's a 13 year old IN REAL LIFE. Can you stomach the fact that pics like these are the "boudary" of what is wrong even if they are legal pics? Keep in mind, with every passing year, a person needs something MORE extreme to fill his boots. Who's to say that person won't get a taste for young girls and do something about it.
If you had a daughter (assuming you don;t because no father would do this shit) how would you feel about 200 porn sites targetting perverts lookign for 13-16 year old porn all the while your daughter is 13-16. Hell, would you push thumb-links to galleries containg girls that LOOK as mature as your 13-16 y/o daughter. Or how would you feel if some webmasters took pic sof your 16 year old daughter as "art" and put them up on the internet.
I am not flamming you at all bud, just letting you that maybe these are the reasons so many people get pissed off about your sites. By using this type of content you are probably limiting yourself to a very narow line of webmasters willing to do biz with you. Sometimes it's better to take slow traffic and clickage as oposed to soething so "up in the air"
Peace.