Let me sneak in with a small note before I urge you all to end this discussion.
We all make mistakes. Some are willing to take the responsibility while others are not that kind. On top of this, most mistakes do look annoying. So what to do? I think it is wise to ponit out any mistake privately rather than public comments. That helps everybody's ego to remain unhurt. Then again there are people who doesn't like to deprive themselves of the instant gratification of catching others off guard. So it comes down to individual choices and practices in the end. And it shows!
Finally, I don't know about what shows of you guys, but it clearly points to my poor English knowledge, but I'm not ashamed of admitting it.