A lot of people seem to be talking about writing; more often, more thoughtfully, more purposefully. Jeremy Keith rounded up quite a few of them earlier today which, in their several ways, make the point that writing regularly is a habit, that it may help others but mostly helps yourself and that you should write whatever you want. All good and true. None of the people Jeremy singled out says much about setting constraints, except perhaps for Patrick Rhone's plea that anything over 280 characters should be "on a blog that you own". Recently, however, I have seen other people remark on the value of a set constraint, usually a number of words. The morning brain dump folks set a minimum of 750 words, and no maximum. Others like a set number of words, no more, no fewer. And that reminded me that ages ago, when blogging was still new and exciting, I took part in a little challenge.