Slatterz links to a story which shows that nowadays, it's sometimes possible to find out whether someone is a dog on the Internet
, excerpting: "A freelance photographer is facing a £22,000 bill after setting up a fake Facebook page that libelled a former classmate. Grant Raphael, a freelance photographer, set up a Facebook page in the name of former school friend Mathew Firsht and posted false information about his sexual and political preferences. He also set up another page for Firsht's television company, the latter entitled 'Has Mathew Firsht lied to you?' ... 'The significance of this case is that it shows that what you post is not harmless, but has consequences,' media lawyer, Jo Sanders, of Harbottle & Lewis, told the BBC."