> repeat anything

Isn't it obvious? Which of the following statements do you think John Doe might take action against you for:

  "John Doe is a great guy". 
  "John Doe isn't a great guy". 
  "John Doe defrauded the bank and stole money from business partners".

If the last one is false but you keep repeating it on your blog out of ignorance, have a guess what will happen?