Normally, I would say, please add your steam i.d. I know minecraft is not a steam game. However, the steam i.d. would be a "good thing to have," so you can search the i.d. and see if the person hacked, trolled, minged in the past...
But, well, you are a known entity, aren't you?
So. Up to the Head Admin for Minecraft, if he does not want the steam i.d., but I would recommend it, so those less known can be better "vetted."
Sheesh, I gotta go lay down, a feeling of being forgiving, plus all these quotation marks...