Anyone can post something here with a link to another website and say "I wrote that." We also have scammers that search the internet and find obscure but good content writers and create accounts with similar names and claim to be them. It's reasonable to ask that users verify the content they are posting is their own work.

https://steemit.com/steemcleaners/@steemcleaners/identity-and-content-verification-guide-when-to-ask-and-when-not-to