I have seen some with my name that are blank. I always wondered if I said something that offended someone and admin deleted it, or if I somehow submitted a blank one.
The comments with the times don't bother me that much. I often compare my times to his/hers to see how I compare. I know it would be bad if everyone did it every time.
I'm guilty of posting times occasionally, as someone said usually because they're abysmally high, or on rare occasions they're low enough to make me giddy. I'll try to keep it to a minimum