apart from making sure ad networks dont get ur app suspensed ,
check the reliability of adnetworks
Its a scam season going on and what i read from forums tapcontext ,inmobi ,leadbolt dont pay developers(suspended your accounts without clarification)
Now a days safe networks are Admob,Mobilecore,Appnext,Startapp
Appnext has yet to cause any app to be banned… And we are a self funded company, not a standard start up. So, no problem with payments, and no risk for us to suddenly close (like eskimob, for example).
Admob, Amazon, Facebook (anyone tried it? is it available?), theoretically Twitter (although MoPub Marketplace used to show adult ads if you weren’t careful with filtering them). AppBrain - almost probably but there are some (small though, not a single person was banned) concerns over the lack of close button and instead using YES/NO question.