http://u.qdnx.org/file/erkanyilmaz-20130620T174519-m6gj26n.html
"#Ahmia’s conclusion is that #Tor network contains mostly #legal content and there are only few sites that are sharing child #porn or selling #drugs. Anyway, you can find this kind of illegal content with #Google and do not need Tor for that." "1028 of 4857 .onion hidden services are online now, 38 servers have shared possible child porn, inadvertently or on purpose; there are only 2 known marketplaces really selling drugs."