Well, someone likes this song, another one that song ... okay.
But is this really rating ?
Yes, it is one kind of rating.
Of course you can add these likes/dislikes in a tag , for example RATING / MY RATING.
On the other hand ratings from a lot of people/a music magazine/ an editorial department is definitly MORE OBVIOUS than a subjective rating. And YES, I want to have an abjective rating of my music archive.
Especially if there is a completely automated solution for it.
There is no question about having a subjective OR objective rating of a song.
It is (very) easy to have both.
So why not having both ?
Why not using a popular online service like lastfm ?
It saves us lots of hours ... / of course we can do personal rating by hand if we like, too.
So to come back to the point:
What can we do with MP3tag scripts there ?