When you post videos from Youtube to your Google+ profile or page, use the "link" feature instead of the "video" feature because it has the same effect and will save you a couple of clicks. Your video especially if it has a nice custom cover will show up prominently on the newsfeed.
And the bonus: You don't have to navigate away from your Post box on Google+ because the URL box appears below where you would type in your notation, description or story.
However if you do not have the video URL handy and have to search Youtube then use the "video" button because it works a treat this way too.
Just in case you are wondering where these buttons are located? Check out this image and navigate to your 'POST' Tab if you're not there already:
That's it for the day guys, just thought I would drop this tip off before I dash out the door!