In any language you want to, but you have to put your name and contact details on it. If you're going to remain anonymous, then don't expect me to keep your insulting comments on my blog. It's as simple as that. Email me if you want to bitch at me in private, or put an email/web site with your name in the comments if you want to tell the whole world. Even then I get to choose what stays. This is my blog, my rules. It's pretty straight forward.
Spamming my comments just gets your subnet banned. No big deal. You don't need to read my blog if you don't like what I say. Go do something else with your time, losers.