Websites, social media and the Internet feed psuedonymity and anonymity while claiming "copyright" to their content.  It is simple enough to give yourself a fake name.  Even under a fake name you can own the copyright to content.  Your Twitter name can be a meme, mantra or brand.  Your eBay name can reflect the product you sell.  No one needs to know your real identity.  Even a website which has photos, videos and content can be fake, fake, fake.  The more technical term is that the website owner could have "psuedonymity and/or anonymity".