I've added tagging to this site. As most of my avid readers know, this blog is made in Django.

A little background how I did it and why I choose to do it that way.

I had two options on how to implement tagging: generic relations using the contenttypes framework and many-to-many relations.

I went with the many-to-many relationship primarily because I had the impression that Contenttypes API isn't stable atm:

Generic relations will most likely be moved out of core and into the content-types contrib package to avoid core dependencies on optional components.

Well, as far as I can see, the django trunk has already made this change.

The second reason I went with the ManyToMany relationship was because I didn't need or want the Generic relations. I just needed to tag posts.

So there.