welcome to HP, were everyone is earning, including the amateur writers like myself..lol...much said, back to your question. a simplified answer, avoid nude or sexually provoking pictures. if you want to display google ads on such pics, then consider registering your own personal site...where you would probably place such, and i doubt if google would allow their ads to be displayed on it. for now, avoid nude, pornographic pictures and contents, i was once penalized for this...and the hub has never been accepted again since then. good luck dear and welcome once again.