Do the math: blogs vs. journal articles

Ok, there are several factors he doesn’t take into account, but I still think DangerouslyIrrelevant’s question is on point:

"Okay, let's review: blog = 4,200,000 person interactions per decade
journals = 166,667 person interactions per decade

The blog wins hands-down from a numbers perspective, even assuming what I think is probably the absolute best case scenario for the peer-reviewed journal path. If we also consider

the ability to hear back from people via blog comments (i.e., to have a true conversation about what's written);
the ability to easily search the content of the blog via Internet search engines (unlike research databases, which typically allow you to only search within article abstracts, not full articles);
the greater availability of blogs to the public generally and educators specifically (particularly since most K-12 folks rarely read peer-reviewed journals);
the ability of popular blog posts to be spread through other bloggers and tools like Digg to even larger audiences;
the ability of blogs to handle multimedia content (i.e., graphics, audio, video); and
the superior connectivity of blogs compared to journal articles (i.e., direct hyperlinks to other resources versus footnotes); the case for a blog seems even stronger.

So this raises the question... Why would anyone who wishes to actually reach educators and hopefully influence change in schools not be blogging?

Also... why haven't more faculty caught on to this?"