It's good that Google is trying to think about how companies (and people) might not want to share everything they do publicly. However, Google should spend considerable amount of time working on their core products.
Many of them are feature-poor (as an example, Google Calendar doesn't seem have a setting to prevent your phone from getting automatic notifications, no matter if you turn EVERY notification off).
If you have anyone else's calendar showing up in your Google Calendar, then Google Now treats all their events as though they are your events, so you get their driving directions and similar notifications. Yet another example of doing things half-assed.
Many of them are feature-poor (as an example, Google Calendar doesn't seem have a setting to prevent your phone from getting automatic notifications, no matter if you turn EVERY notification off).