I would use the tagging just once in a while. You could also use it in combination with a remark/question to ask if people like it or not and let you know in the comments.

I really like Enjars idea to change the calculation. Although I would suggest to do this one in a few weeks.

I'm still not sure how I score 1 PS point?
Do I need to talk to someone? Or someone to me? Or both?
Or will you just keep that a secret?