G+ links showing up as youtube videos Answered
When commenting on an Instructable, I pasted in a Google Plus link to an image gallery.
This link was incorrectly assumed to be a youtube video and showed a broken youtube video as soon as I hit return after the link.
This link was parsed as a youtube video as long as u/0/ was in the string. Any string that included "u/0/" was parsed as a youtube video and any string without it was parsed correctly.