Perhaps you can choose if it is public or private. Public is nice because then you can find likeminded people whom you can know probably says things you agree with, and it is easier to find spam accounts. Private is necessary as otherwise many people would probably feel uncomfortable with everyone knowing everything they said.
In addition to this feature I would also like it if you could filter the history based on likes and replies to my comments. I would be interested in knowing which were my most "popular" comments and which sparked interaction.