Well, when you start from very low as we did it's pretty clear that it's not about the reward. We've provisioned a server for a year before having any idea of whether the rewards would cover our costs. Someone around the 115 rank in the active witness list would not be covering our server costs (let alone cover the time spent). We would need to climb up to around place 60 to approach break-even when only half the time spent (Pablo's because one can claim that I would be blogging anyway, with or without the witness) is included. So looking at it from the get go it is clearly a lousy business to start a new witness, if it had been for the money we wouldn't have even tried.