Advice on how to become a blogger in college from Wired:
Spend less time on coursework, because unless you’re going to graduate school, your grades don’t matter. And you don’t need to go to grad school to be a journalist. This route will leave more time for you to start blogging in college and jump into the work world with a strong following already established (plus a public record that you can write and report the news).
Sounds about right.