Helpful Google+ videos
Google+: Set Up Your Profile
Welcome to Google+
Google+: A quick look
Google+: Reading and Responding
Google+: There's more to explore
Google+: About Circles
When you open YouTube and usually when sharing a video from there you use the 'Share' link under the video, right? Copy and then paste it to the share link box.
On comments or inside the text however: Copy and then paste the top URL!
That's what has been done here. When you write the post it looks like a normal YouTube URL, but after saving it changes like this into readable text.
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