I can hear the complaints already: If you read one more geeky media type going on about how Web 2.0 is helping transform the news from a lecture into a conversation, you’ll fire off an angry e-mail or toxic, troll-worthy comment accusing me of trafficking in trendy new media cliches. If you do, then I thank you for helping to illustrate the point of today’s column. Comments on journalism, media and political news Web sites from readers or news viewers are indeed allowing for instant, richer feedback.