I would not relax #ContinuousIntegration to just mean "at least once per day". Microsoft was already doing #NightlyBuilds back in the day and this was explicitly not equivalent to #ContinuousIntegration. If it's "continuous" it has to be at least more than once per day.
@jchyip It's also not "integration" if it only runs on your out-of-date long-lived feature branch!