here in my country there are a lot of sell-buy-type sites like ebay somewhat. Two of them are the most popular. I'm thinking in creating a website that when you list something to sell, it automaticly adds the advert to all the other websites.
I'm not planning to talk with the websites owners. So the question is: will the other website owners have the right to sue me, or the only thing they can do is to improve their websites so a script can't make posts automatically?