To the contrary, keeping up with events online gives you the ability to be proactive about acquiring knowledge, rather than waiting for what makes it though the filter of a periodical or what someone else thinks important; not to mention the bias of opinion pieces. If your periodical of choice sits on a story, or misreports, you will likely never find out about it if you don't pay attention to outside sources (e.g. the NYT sat on their report about the administration's illegal domestic spying/warrantless wiretapping program until after the 2004 election).