I think it's usually kind of lame, and in this log I wish I hadn't said anything. In some situations it's good if it has an impact on cabal wars, i.e. someone that could defend against a raid that you killed etc..

I think I said it just because that was probably my only pk in about 50 hours of desperately trying to get one and I was so excited I had to tell someone lol. but yeah bragging over CB about your pks just makes people hate you.