Google has activated half a billion Plus users, 235M active on a daily basis and 135M read their streams

Google is releasing some Plus numbers for the first time in awhile. While Facebook has surpassed 1 billion active users, Google says their numbers are about half that and that is only for activations. Less than half of those people (235M) are using the service (+1′ing apps in Google Play, hanging out in Gmail, writing reviews in Maps…). Who is using the stream? Just 135M or 27% of the people Google has activated. …