And therein lies what I think is the key differentiation, in that Twitter puts in our hands the important news of the moment. Google+ has the capacity to be an information stream like Twitter (or, as one friend in my Circles put it, a “torrential downpour”). But Google+'s ability to go beyond the character limit is exactly why it won't be as good as Twitter at this specific task: Information will be more robust, yes, but also more verbose. If brevity is the soul of wit, then wit is what's at the heart of Twitter. It's the lifeblood that'll keep it alive.