Quick lesson, folks:
A blogger is any schmoe, like you and me, with a keyboard and an internet connection. That's all it takes to blog. Coincidentally, that's all it takes to post messages here on HuskerBoard, or on ESPN's stories, or on Sportsline's stories, or any other forum or blog or comments section. "Bloggers" are often no more informed than you or I, and frankly, there are about a dozen guys here I could think of who are far more informed than most bloggers out there. Having a blog doesn't make you an expert, it makes you a blogger. Kind of like having a hammer doesn't make you a carpenter.
A writer, in the traditional sense of the word especially as it pertains to this subject, typically means someone who has their J-school degree, has spent some time honing his writing craft, and has some insight that the regular schmegular guys like you and I and the bloggers don't have, largely due to a magical talisman called a Press Pass. This Press Pass, acquired after many adventures and daring feats, gives the writer greater access to the players, coaches and facilities than you or I or the blogger has. It also means he has an editor and typically a fact-checker (although in small shops the editors and fact-checkers are one and the same), and it also means that the writer has journalistic standards and usually something called "integrity" that a blogger has no requirement to possess*. Because of these things, they often don't write like total a$$, and their stories often have direction, purpose, and are typically based on facts, something this blog doesn't have and on which it is not based.
* - note: concepts like journalistic standards and integrity typically do not apply to "journalists" from Texas, Missouri and/or ESPN.