Expressing opinion by posting comments on a web is okay for the sake of freedom of speech, as long as you do it responsibly.
We may learn something from Gargaro's experience. One thing for sure, he is not a blogger. Richard, the author of Shadow Scope clarified on his blog that Gargaro is just a commenter;
A commenter is someone that writes comments on someone else's blog posting or newspaper article. Jeffrey Gargaro is NOT a blogger, so quit with the "Blogger is jailed" crap.
You can watch the full story in video below.
I couldn't agree more with Richard's tip; WATCH WHAT YOU SAY ON THE INTERNET.