I have a huge dilemma, I launched a dog lover community/store/vet chat/information/directory website in Mexico and for the Spanish speaking community. It was launched 7 months ago and it's starting to go big. I am being sponsored by the most recommended dog food brand by vets in the U.S. since 20 days ago. I have the following issue, among the sections of the site I have classifieds of dogs for adoption as well as puppies for sale. I make no money whatsoever of any of this I make it with the intention of increasing traffic and as well for people to have a place to find this kind of information and make a responsible decision supporting themselves with the information we provide in the site and the vet online. Right now I don't have a way to certify the sellers of puppies to make sure they are reliable in order to avoid frauds or risky situations for the users. All I can do is put a disclaimer which is highly visible in this section explaining users the risks involved and to use common sense. An important point to take note is that for now I am loading the classifieds from other sources until traffic is high enough that users themselves publish them.
The issue I have is that the security in MEXICO is so bad that I risk at some point having a bad situation with the users and have very bad press which could risk my relation with my sponsor(s). In the long run ideally I would like to charge per classified to filter at least to some degree the bad elements. What do you guys think? Is it a risk worth having or better to delete this section until I can improve on the security or take it out for good? What is a reality is that any classifieds site (i.e. craigslist, newspapers, olx, etc) as well as sites like ebay all have a % of frauds that you just cant avoid but only mitigate but they dont directly do their money from fixed ads but either from adsense or % of products sold. Thanks in advance for your help!