This is a conscious duplicate :D

There are at least two more questions about it (The color of links in comments, On the current color scheme, and why it sucks - by the way, when trying to share them via the share button I discovered that by some reason both have the same url https://meta.mathoverflow.net/q/320/41291) but I still decided to post yet another question about it since I could not figure out anything sensible from the existing ones.

About the url issue: The last part of the shared url is your own user id. It may have confused you that it is the same for both questions (as it has nothing to do with the questions). The sharing url is of the form http://meta.mathoverflow.net/q/<question-id>/<user-id>. The link also works if you drop the last part. I don't know if the user id has any applications beyond awarding some badges.