Brevity
MG Siegler posted yesterday about his desire to write with more concision. His point is a good one: writing concisely suggests, when you think about it, a far better grasp of a topic than does the need to write 1,000 words about it.
It’s a lesson I learned from a couple of professors in law school (while others tried to teach almost the opposite):
Get in, make your point, and get out.