I've read quite a lot of books, posts, articles, etc. on blogging over the past several years. There are those who would agree with your post and those who would not; however, my comment isn't to be one of the distractors. I agree with you about finding that middle ground.
A properly targeted and well written post of a mere 400-500 words can have more impact than a poorly targeted and badly crafted one of 1,400-1,500. To futher play with the dual meaning carried with the post's title, it isn't how many words you have but how you use them.
Thanks for the info.