B.L. Ochman, former moderator of i-pr, has a short read on blog writing (TechnoFlak)
B.L. Ochman’s weblog – How to Write Killer Blog Posts and More Compelling Comments.
o Write less
Omit all unnecessary words. The best advice I ever got about writing was from my first boss, the late "press agent" Leo Miller, who taught me a game to play with sentences. He’d keep taking out words until removing one more word destroyed the meaning of the sentence. For example: He’d take out words until removing another destroyed the sentence meaning.