I guess "not nonsensical" would be more appropriate than "informative" :)

I tend to dump information like that in "// NB (my name, current date) tralala"-style comments. Do you have git integrated in your editor so you have git-blame-style commit messages next to your code? If that is the case, I guess putting the information in the commit messages makes sense.

Maybe it just comes down to how we choose to store auxiliary information.