Academic literacy and blogging

So I'm really always getting back to this academic literacy question. We may change our definition of what counts as academic literacy in order to acknowledge the many new literacies the internet has afforded, but that will not change the fact that traditional academic literacy is still being used as the primary mode of communication of knowledge in most academic settings and as the primary gatekeeping for young people advancing through their coursework, and succeeding in university settings, etc. How can blogging help young people master these more traditional skills?