A different kind of use case: attribution. In my case I used this to correct an improper attribution to me, I searched for my name and came across: https://github.com/dks/TinyOAuth Except I didn't write OAuth.php. I wrote a different library.
I just did a search on my name and found a litle project I had never heard of that was based of a little thing I did.
Kind of ego boosting and nice to know that some things you do are actually found useful by people.