I posted some not-so-nice comments on a blog about a girl who is currently a working actress (I don't know her personally but I know people who do). Bottom line, I called her a bitchy snob and stated I knew of a time she threw a beer on someone. I can not remove the comments because I posted them anonymously (or I would). However, I am now concerned she may take legal action against me or sue me for defamation of character. Is this possible and would she have grounds to do so? The comments were posted on a public blog run by someone else - not her own personal site/blog.