I really dig the "top tags" idea. Similarly, it'd be awesome if one could filter through an individual person's writing by tag. This way, if I were viewing your profile, for instance, I could filter to see just #python or just #culture... or perhaps even more than one tag at a time.
I'm envisioning your profile including another column on either the left or right of articles (similar to the way you've set up "skills/languages" in your profile) that would list the different tags you've covered. I'm thinking it would list your most used tag at the top and descend from there. And as a profile viewer, I could then flip them on and off depending on what results I'd like to see.
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.