The Register –
Your wishes have been granted: Google has quietly added a new “feature” to Gmail that allows anyone with a Google+ account to send you email even if they don’t know your actual webmail address.
Over the next few days, Gmail users with Google+ accounts will start seeing names from their Google+ circles suggested as potential recipients when they start typing in the “To” field of new email messages. By default, “anyone on Google+” can email a Gmail user via their Plus account.