The reason they look like "tweets" is that, in fact, they are tweets. Needleman started offering his PR tips on Twitter and then decided to post them as a blog too, for those of us not yet into Twitter.
A-list bloggers are like angry, spoiled schoolgirls. Calibrate your pitches accordingly.If you're interested in Rafe's thoughts on this project, head over to Sam Whitmore's Media Survey, where you'll find a podcast with Rafe. BTW, if you're in tech media PR or related areas (and what's not related these days?), check out Sam's top-flight offerings. He provides tech media news, research, analysis and consulting to an impressive PR client base.
It would be good if your product ships before the T-Shirt you gave me wears out.