think before you write??

Met a friend yesterday who mentioned another friend who blogs. The friend-2 he said, is about to finish a post he's been writing since the past X days.. And I wondered (yes, I can do that too) -- how many of us think* before we write? People**, I have linked, write very often, and I have every reason to believe that they don't stretch their writing activity to multiple days.. hell, i dont even remember having written any post*** for close to an hour... how do people write and think? I was just wondering.... * - think, refers to stretching the thought-process activity to absurd levels ** - most of the people atleast... *** - we do not talk abt quality of posts