Rules For Bloggers #5:
Seems like some bloggers make the mistake of berating or getting into childish name calling arguments with other bloggers or commenters. Don’t poke fun at other people or their blogs, no matter how crappy they or their ideas might be. Provide constructive comments and ways they could improve.
If your blog is about how to be more effective at yelling and name calling, then go for it. Otherwise, be nice.