Now, even YouTube uses Google Accounts. Therefore, Google can easily integrate YouTube with other Google services. Moreover, the latest redesign of YouTube made the integration with social network more prominent and the videos from Google+ can be easily accessed within a single click.
Now, YouTube tests the header that’s already displayed in Google Search, Gmail, Google Docs and many other Google services. The header shows your Google+ notifications, a box that lets you share videos with other Google+ users and links related to your Google profile.