My site is serving Tribalfusion banner ads and as you already known they have various types of banner ads Adultfriendfinder, passion.com, mate1.com etc... I'm afraid that YPN isn't too happy and kick out butts out of the door Any suggestions would greatly appreciated.
Not a YPN publisher yet, so can't really answer your question. However, I did click a YPN ad here at DP earlier and it turned out that the ad was for an adult related site! Don't know if YPN allows these type of ads or if it just slipped through.
You need to contact them, but according to their TOS they are strict on this type of material being used on sites where their ads are.
mate1 ads are on places like the WashingtonPost.com and MySpace.com and I know YPN has some dating ads as well (i don't know if they have any from the sites you mentioned, but if they do, they shouldn't be blocking you out).