how to report a website?

[Laura]

My Little brother who's nine heard about a website called santabot.com where he could talk to Santa. He went on to the site and started talking an online chat he asked if Santa had got his letter and he got responses talking about sex obviously I know it was all computer generated and he wasn't really talking to any Santa clause but he doesn't Know and now he is very upset this is not appropriate things for a site to say to a child that believes they are talking to Santa who knows how many more Children things like that were said to this website needs to be shut down how can you make that happen?