Links in a page pointing to same page? (as in Stack Exchange questions’ title)

Example: (questions' title here are an example indeed)

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I often see content that offer links to itself (not referring to links in navs, side bars and pointing to other part of the same page, but in the content itself) and I can't imagine why it could be useful apart from obtaining the functionality of a link, which allows you to:

• Copy the URL with right click more easily than triple click the URL bar and then Ctrl+C or rightClick+Copy, thus making sharing easier.
• Open it in a new tab with middle button (which I don't think is a common use at all)

Maybe these are the only uses and due to its lack of harm, there's no reason not to keep them.

So, what's the real purpose of this? Are there other situations when this could be useful/harmful?